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The Adventure Begins

40 Days of Discipleship is a three-volume, self-paced curriculum for advanced study in the doctrine and incarnational Trinitarian theology taught by Grace Communion International. Each  volume is designed to be read in 40 days (about 2,000 words daily), covering the same ten categories (going deeper each time).

Volume 1

The First 40 Days
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Volume 2

The Second 40 Days
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Volume 3

The Third 40 Days
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Volume 1
The First 40 Days

Theology in general ​

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Why Bother With Theology? by Joseph Tkach
​Strong Theology vs. Weak Theology, by Joseph Tkach
Theology Affects the Way We Live, by Joseph Tkach
Theology in Perspective, by Joseph Tkach
Theology: What Difference Does It Make? By Terry Akers and J. Michael Feazell
Answering Questions About Our Theology, by Gary Deddo
​Beware Theological Labels, by Joseph Tkach ​

​The Triune God

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An Introduction to God, by Michael Morrison
​The God Revealed in Jesus Christ, by GCI
We Were Always on His Mind, by Joseph Tkach 

Jesus Christ

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Who Is This Man? by Michael Morrison Is Jesus Really God?
A Look at the Arian Controversy, by J. Michael Feazell
What Jesus’ Incarnation Shows Us About What It Means to Be Human, by Rick Shallenberger, and Jesus, the Unexpected Messiah, by Joseph Tkach
Why Did Jesus Have to Die? by Michael Morrison

The Holy Spirit

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The Holy Spirit, by Michael Morrison

The Use and Misuse of Spiritual Gifts, by Joseph Tkach, first half

The Use and Misuse of Spiritual Gifts, by Joseph Tkach, second half
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The Holy Spirit Is the Personal Presence of God, by Paul Kroll
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The Scriptures

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The Written Word of God, by Michael Morrison

Bible Study Secrets, by George Hague

Inspiration, Authority, and Reliability of Scripture, by Michael Morrison

The Importance of Doctrine, by Joseph Tkach

Incarnational Trinitarian Theology: A Brief Outline
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​The Gospel

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The Gospel—It’s Not Fair, by Joseph Tkach

The Message of Jesus, by Michael Morrison

Preaching in the Book of Acts: Peter, by Michael Morrison

Sharing the Good News, by Joseph Tkach
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Good News for Ordinary People, by Michael Morrison
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​Grace and Salvation

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Grace, by Joseph Tkach

Going on a Guilt Trip? By J. Michael Feazell

What Is Salvation? by Michael Morrison

Humans in the Image of God, by Michael Morrison

Responding to God’s Grace in Our Relationships, by Joseph Tkach
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Grace: A License to Sin? By J. Michael Feazell
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​The Church

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What Is the Church? by Michael Morrison

Six Functions of the Church, by Joseph Tkach, (first half)

Six Functions of the Church, (second half)

Perfect Worship

Ministry Means Service, by Michael Morrison
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​The Christian Life

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Christian Life, by Michael Morrison

Obeying God, by J. Michael Feazell

Responding to Jesus With Prayer, by Joseph Tkach

In His Name
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The Role of the Law in Christian Life, by Joseph Tkach
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The Future

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The End Is a New Beginning, by Michael Morrison

The Resurrection: Our Hope for the Future, by Joseph Tkach

We Are Living in the Last Days, by Joseph Tkach

Heaven, by Joseph Tkach
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No One Knows When Christ Will Return, by Norman Shoaf
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