Cursos disponibles

Following Jesus in Committed Service

About the Authors

Dr. Leona Janzen Venditti has extensive experience in the fields of education and missions. She taught at Open Bible Institute in Trinidad from 1969 to 1972 and at Open Bible College in Des Moines, Iowa (USA), from 1972 to 1980. She also served as Academic Dean at Open Bible College. In 1981, the Department of International Ministries (now Global Missions) of Open Bible Churches sent her to Spain where she established INSTE in 1982. She is the co-author of the twenty-eight books which form the basis of INSTE’s curriculum. Dr. Venditti is a graduate of Open Bible College (BA, 1967) and Upper Iowa University (BA, 1969). Her graduate studies were done at Drake University (MSE, 1973; Ed S, 1976; Ed D, 1978).

Dr. Nicholas Venditti, born to an Italian father and Puerto Rican mother, grew up in New York. He studied literature and musicology at New York University (BA, 1972). Nick went to Spain in 1972. He enrolled in INSTE where he received his theological training while ministering in evangelism in various churches in Spain. In 1987, Nick and Leona were married. They continue ministering together in INSTE. Dr. Venditti received the M Div in theology from Fuller Theological Seminary, Pasadena, California (USA), in 1993, and the PhD from the School of World Missions at Fuller Theological Seminary in June 1998.

Do your best to present yourself to God as one approved, a worker who has no need to be ashamed, rightly handling the word of truth.

2 Timothy 2:15

Following Jesus in Committed Service

In this unit we will look at what you can expect of this Certificate in Spiritual Growth I, its

purposes and objectives, and how you can individualize these studies to gain the maximum benefit

from this course. But before doing that, read the list of the objectives for this lesson.

The Certificate Program


This course highlights the formation of basic skills and attitudes which characterize a disciple of Jesus Christ; i.e., devotional habits, personal Bible studies, the function of prayer in the life of a disciple, how to effectively witness, plus biblical attitudes toward others and oneself.


This course highlights the formation of basic skills and attitudes which characterize a disciple of Jesus Christ; i.e., devotional habits, personal Bible studies, the function of prayer in the life of a disciple, how to effectively witness, plus biblical attitudes toward others and oneself.

This course focuses attention on the basic doctrines of the Christian faith. It begins with the doctrine of the Church with a special emphasis on how to discover and develop spiritual gifts in the Body of Christ. Also studied are vital doctrines such as the inspiration of the Bible, the nature of God, the person and work of Jesus Christ, man and sin, salvation and sanctification, the Holy Spirit, angels and last things. All doctrines are presented from a practical and apologetic viewpoint.
This course focuses attention on the basic doctrines of the Christian faith. It begins with the doctrine of the Church with a special emphasis on how to discover and develop spiritual gifts in the Body of Christ. Also studied are vital doctrines such as the inspiration of the Bible, the nature of God, the person and work of Jesus Christ, man and sin, salvation and sanctification, the Holy Spirit, angels and last things. All doctrines are presented from a practical and apologetic viewpoint.

A synthetic approach to Bible study looking at each New Testament book. We consider key questions such as background, authorship, major themes, outlines, and personal application of Bible truth to the life of the disciple.

A synthetic approach to Bible study looking at each New Testament book. We consider key questions such as background, authorship, major themes, outlines, and personal application of Bible truth to the life of the disciple.


The purpose of this course is to provide the disciple with a solid foundation for continuing studies in the Old Testament. The student learns the general content of each book, its relationship to the rest of the canon, and the place of each in the progressive revelation of God in the Old Testament.

This course focuses attention on the basic doctrines of the Christian faith. It begins with the doctrine of the Church with a special emphasis on how to discover and develop spiritual gifts in the Body of Christ. Also studied are vital doctrines such as the inspiration of the Bible, the nature of God, the person and work of Jesus Christ, man and sin, salvation and sanctification, the Holy Spirit, angels and last things. All doctrines are presented from a practical and apologetic viewpoint.

A synthetic approach to Bible study looking at each New Testament book. We consider key questions such as background, authorship, major themes, outlines, and personal application of Bible truth to the life of the disciple.

A synthetic approach to Bible study looking at each New Testament book. We consider key questions such as background, authorship, major themes, outlines, and personal application of Bible truth to the life of the disciple.

A synthetic approach to Bible study looking at each New Testament book. We consider key questions such as background, authorship, major themes, outlines, and personal application of Bible truth to the life of the disciple.

This course focuses attention on the basic doctrines of the Christian faith. It begins with the doctrine of the Church with a special emphasis on how to discover and develop spiritual gifts in the Body of Christ. Also studied are vital doctrines such as the inspiration of the Bible, the nature of God, the person and work of Jesus Christ, man and sin, salvation and sanctification, the Holy Spirit, angels and last things. All doctrines are presented from a practical and apologetic viewpoint.

The purpose of this course is to provide the disciple with a solid foundation for continuing studies in the Old Testament. The student learns the general content of each book, its relationship to the rest of the canon, and the place of each in the progressive revelation of God in the Old Testament.

This course focuses attention on the basic doctrines of the Christian faith. It begins with the doctrine of the Church with a special emphasis on how to discover and develop spiritual gifts in the Body of Christ. Also studied are vital doctrines such as the inspiration of the Bible, the nature of God, the person and work of Jesus Christ, man and sin, salvation and sanctification, the Holy Spirit, angels and last things. All doctrines are presented from a practical and apologetic viewpoint.

This course highlights the formation of basic skills and attitudes which characterize a disciple of Jesus Christ; i.e., devotional habits, personal Bible studies, the function of prayer in the life of a disciple, how to effectively witness, plus biblical attitudes toward others and oneself.


This course highlights the formation of basic skills and attitudes which characterize a disciple of Jesus Christ; i.e., devotional habits, personal Bible studies, the function of prayer in the life of a disciple, how to effectively witness, plus biblical attitudes toward others and oneself.


This course highlights the formation of basic skills and attitudes which characterize a disciple of Jesus Christ; i.e., devotional habits, personal Bible studies, the function of prayer in the life of a disciple, how to effectively witness, plus biblical attitudes toward others and oneself.


The purpose of this course is to provide the disciple with a solid foundation for continuing studies in the Old Testament. The student learns the general content of each book, its relationship to the rest of the canon, and the place of each in the progressive revelation of God in the Old Testament.


This course highlights the formation of basic skills and attitudes which characterize a disciple of Jesus Christ; i.e., devotional habits, personal Bible studies, the function of prayer in the life of a disciple, how to effectively witness, plus biblical attitudes toward others and oneself.


The purpose of this course is to provide the disciple with a solid foundation for continuing studies in the Old Testament. The student learns the general content of each book, its relationship to the rest of the canon, and the place of each in the progressive revelation of God in the Old Testament.


The purpose of this course is to provide the disciple with a solid foundation for continuing studies in the Old Testament. The student learns the general content of each book, its relationship to the rest of the canon, and the place of each in the progressive revelation of God in the Old Testament.


This course highlights the formation of basic skills and attitudes which characterize a disciple of Jesus Christ; i.e., devotional habits, personal Bible studies, the function of prayer in the life of a disciple, how to effectively witness, plus biblical attitudes toward others and oneself.

A synthetic approach to Bible study looking at each New Testament book. We consider key questions such as background, authorship, major themes, outlines, and personal application of Bible truth to the life of the disciple.

A synthetic approach to Bible study looking at each New Testament book. We consider key questions such as background, authorship, major themes, outlines, and personal application of Bible truth to the life of the disciple.

This course focuses attention on the basic doctrines of the Christian faith. It begins with the doctrine of the Church with a special emphasis on how to discover and develop spiritual gifts in the Body of Christ. Also studied are vital doctrines such as the inspiration of the Bible, the nature of God, the person and work of Jesus Christ, man and sin, salvation and sanctification, the Holy Spirit, angels and last things. All doctrines are presented from a practical and apologetic viewpoint.

This course highlights the formation of basic skills and attitudes which characterize a disciple of Jesus Christ; i.e., devotional habits, personal Bible studies, the function of prayer in the life of a disciple, how to effectively witness, plus biblical attitudes toward others and oneself.

A continuation of the previous course (Church History 1), from the great mission century to the end of the twentieth century. The worldwide expansion of the Church is stressed.

An introduction to the history of the first fifteen centuries of the Church. Emphasis is placed on the fulfillment of the mission of the Church through two structures, modalities and sodalities. We also deal with two major principles that have affected the renewal and expansion of the Church throughout the centuries.

A theological study of the Church with emphasis on the Church as the community of the people of God. The Church is studied in relation to the kingdom of God, its nature, structure, and mission. Foundational principles of ecclesiology are identified and defined in this course.

The student is encouraged to examine his/her life and discover the means that God has used and continues to use to develop him/her as a leader. Emphasis is placed on the great importance of the character of leaders and their life-long development.
The student is encouraged to examine his/her life and discover the means that God has used and continues to use to develop him/her as a leader. Emphasis is placed on the great importance of the character of leaders and their life-long development.

A theological study of the Church with emphasis on the Church as the community of the people of God. The Church is studied in relation to the kingdom of God, its nature, structure, and mission. Foundational principles of ecclesiology are identified and defined in this course.

An introduction to the history of the first fifteen centuries of the Church. Emphasis is placed on the fulfillment of the mission of the Church through two structures, modalities and sodalities. We also deal with two major principles that have affected the renewal and expansion of the Church throughout the centuries.

A continuation of the previous course (Church History 1), from the great mission century to the end of the twentieth century. The worldwide expansion of the Church is stressed.

The student is encouraged to examine his/her life and discover the means that God has used and continues to use to develop him/her as a leader. Emphasis is placed on the great importance of the character of leaders and their life-long development.

A theological study of the person and work of Jesus Christ. The course is divided into three parts: the eternal Christ, the incarnate Christ, and the exalted Christ. The Christology found in the Gospels is emphasized.

This course begins with an introduction to Paul’s epistles. Also presented are hermeneutical principles for the interpretation of epistolary literature. A special focus of this course is the Christology of the twin epistles.


A hermeneutical study of John and his Epistles. This course begins with the introduction of the principles of inductive Bible study, which are illustrated and practiced throughout the study. Emphasis is placed on the person and work of Jesus Christ, the One sent from God. The course ends with an inductive analysis of the Epistles of John.


A theological study of the person and work of Jesus Christ. The course is divided into three parts: the eternal Christ, the incarnate Christ, and the exalted Christ. The Christology found in the Gospels is emphasized.


A hermeneutical study of John and his Epistles. This course begins with the introduction of the principles of inductive Bible study, which are illustrated and practiced throughout the study. Emphasis is placed on the person and work of Jesus Christ, the One sent from God. The course ends with an inductive analysis of the Epistles of John.

This course is an inductive study of Luke’s writings. It underscores the fact that Luke-Acts is the continuation of the salvation history of the Old Testament. In this course we will deal with the development of the Church from its unique beginnings to its emergence as the universal people of God through the moving of the Holy Spirit.

This course begins with an introduction to Paul’s epistles. Also presented are hermeneutical principles for the interpretation of epistolary literature. A special focus of this course is the Christology of the twin epistles.

This course is an inductive study of Luke’s writings. It underscores the fact that Luke-Acts is the continuation of the salvation history of the Old Testament. In this course we will deal with the development of the Church from its unique beginnings to its emergence as the universal people of God through the moving of the Holy Spirit.

We will inductively study the epistles to the Romans and Galatians using the Bible study methods we have introduced in previous courses. In these two wonderful epistles from pen of the Apostle to the Gentiles, we find soteriology applied universally.
Although teaching methods are determined both culturally and temporally, there are certain biblical principles that are universally applicable; these are the principles that form the basis of this course. We include principles for teaching children, youth, and adults.

Hebrews is an introduction to the letters written to Jewish Christians, with special attention to the Epistle to the Hebrews. The theme of the course points to Jesus Christ as the final revelation of God to humanity. Special emphasis is given to the hermeneutics of Hebrews in relation to the Old Testament.

Although teaching methods are determined both culturally and temporally, there are certain biblical principles that are universally applicable; these are the principles that form the basis of this course. We include principles for teaching children, youth, and adults.

Hebrews is an introduction to the letters written to Jewish Christians, with special attention to the Epistle to the Hebrews. The theme of the course points to Jesus Christ as the final revelation of God to humanity. Special emphasis is given to the hermeneutics of Hebrews in relation to the Old Testament.

We will inductively study the epistles to the Romans and Galatians using the Bible study methods we have introduced in previous courses. In these two wonderful epistles from pen of the Apostle to the Gentiles, we find soteriology applied universally.

A theological study of the three phases of salvation from the moment of new birth until the glorious reunion with our Lord. The focus of this course is both missiological and soteriological. It includes a study of sanctification as an essential part of salvation.

The study of the first five books of the Old Testament, with special emphasis on the first eleven chapters of Genesis. This course includes a thematic study of the Law of Moses, the Tabernacle in the desert, and the feasts prescribed in the Law in relation to the New Testament.


This course begins with a study of theology from an apologetic perspective, and deals with the Fatherhood of God and His Word, with an introduction to hermeneutical principles related to this topic. The second part of the course deals with Pneumatology, i.e., the study of the Person and work of the Holy Spirit. Included in this section is an introduction to the Pentecostal / Charismatic movement.


This course begins with a study of theology from an apologetic perspective, and deals with the Fatherhood of God and His Word, with an introduction to hermeneutical principles related to this topic. The second part of the course deals with Pneumatology, i.e., the study of the Person and work of the Holy Spirit. Included in this section is an introduction to the Pentecostal / Charismatic movement.

  1. An introduction to the principles of sermon preparation and presentation. Students practice their skills in their churches and learn to use good homiletic principles in the construction of three types of sermons: topical, textual and expository.

An inductive study of the historical books of the Old Testament. Leadership lessons found in this portion of Scripture are stressed.

An inductive study of the historical books of the Old Testament. Leadership lessons found in this portion of Scripture are stressed.

  1. An introduction to the principles of sermon preparation and presentation. Students practice their skills in their churches and learn to use good homiletic principles in the construction of three types of sermons: topical, textual and expository.

An inductive study of the historical books of the Old Testament. Leadership lessons found in this portion of Scripture are stressed.

The study of the first five books of the Old Testament, with special emphasis on the first eleven chapters of Genesis. This course includes a thematic study of the Law of Moses, the Tabernacle in the desert, and the feasts prescribed in the Law in relation to the New Testament.


This course begins with a study of theology from an apologetic perspective, and deals with the Fatherhood of God and His Word, with an introduction to hermeneutical principles related to this topic. The second part of the course deals with Pneumatology, i.e., the study of the Person and work of the Holy Spirit. Included in this section is an introduction to the Pentecostal / Charismatic movement.

In this course the major religions and cults are analyzed historically and apologetically, with the purpose of being able to share the gospel in an effective way with their adherents. Special attention is given to Islam. Traits that cults have in common are also presented.

This course is a hermeneutical study of the poetic literature of the Old Testament. Since a third of the Bible is written in poetic form, an understanding of the rules of interpretation is imperative for every spiritual leader. Also emphasized is the private and public use of poetic literature in the Christian community.

As you study this course you will learn to pray, sing, and even complain in a “holy” way. The psalmists instill in us confidence and thankfulness to God our Creator and King. The authors of the Old Testament wisdom literature gave us guidelines for living wisely in relationship to God. In this course we will introduce hermeneutical guidelines for the interpretation of Old Testament poetic literature.

In this course the major religions and cults are analyzed historically and apologetically, with the purpose of being able to share the gospel in an effective way with their adherents. Special attention is given to Islam. Traits that cults have in common are also presented.

Two related themes are developed in this course: The uniqueness of man made in the image of God and the human tragedy caused by sin. The destiny of man is also studied. The student develops a biblical perspective of man and his need for salvation.

This course teaches skills for ministering to people who need emotional and spiritual help. The student develops skills of listening, questioning, etc. Emphasis is placed on the work of the Holy Spirit and the Word both in the counselor and in the counselee.

This course is a hermeneutical study of the poetic literature of the Old Testament. Since a third of the Bible is written in poetic form, an understanding of the rules of interpretation is imperative for every spiritual leader. Also emphasized is the private and public use of poetic literature in the Christian community.

As you study this course you will learn to pray, sing, and even complain in a “holy” way. The psalmists instill in us confidence and thankfulness to God our Creator and King. The authors of the Old Testament wisdom literature gave us guidelines for living wisely in relationship to God. In this course we will introduce hermeneutical guidelines for the interpretation of Old Testament poetic literature.

In this course the major religions and cults are analyzed historically and apologetically, with the purpose of being able to share the gospel in an effective way with their adherents. Special attention is given to Islam. Traits that cults have in common are also presented.

Two related themes are developed in this course: The uniqueness of man made in the image of God and the human tragedy caused by sin. The destiny of man is also studied. The student develops a biblical perspective of man and his need for salvation.

An introduction to the skills required for the healthy functioning of the church. Emphasis is placed on teamwork, the services and ceremonies of the church, how to prepare and maintain financial information and other important documents of the church, ministerial ethics, and many other practical topics.
An introduction to the skills required for the healthy functioning of the church. Emphasis is placed on teamwork, the services and ceremonies of the church, how to prepare and maintain financial information and other important documents of the church, ministerial ethics, and many other practical topics.
An introduction to the Prophets of the Old Testament. Relevant hermeneutical principles are applied to prophetic literature. Leadership principles are drawn from these books. The content of each book is over viewed.
An inductive study of Daniel and Revelation. The course begins with a study of the hermeneutical methods of interpretation of apocalyptic literature followed by an inductive study of these two important books. Discipleship and leadership lessons found in Daniel and Revelation are discussed.
This course is a study of the theology of last things. It presents the various hermeneutical systems that have been used throughout the history of the church. Emphasis is placed on the relation of eschatology to the Great Commission. Both the personal and corporate aspects of eschatology are studied.