The IMB partners with churches to empower missionary teams who are making disciples and multiplying churches among unreached peoples and places for the glory of God. This strategic aim includes and implies key terms and concepts that are not explicitly defined in the Baptist Faith and Message, the statement of belief with which we align all of our practice. Therefore, the purpose of this document is to provide biblically faithful, denominationally loyal definitions for terms and concepts that profoundly affect who we are, where we go, what we do, and how we train. We want a biblical understanding of these terms and concepts to be clearly articulated and consistently understood across the IMB so that we can wisely apply God’s Word in our work together. Doubtless, more terms and concepts will need to be defined in the days to come, but this document contain definitions of the following: gospel, evangelism, conversion, disciple, disciple making, calling, missionary, missionary team, unreached peoples and places, and church.