Although out of print, David Bryant’s book In the Gap: What it Means to Be a World Christian is worth searching for on the used book market. Bryant uses the term “standing in the gap” to press home our call to the Great Commission, to bridging the gap between the unbeliever and God with the Good News. He encourages us to place no limits on how God may use us or how fully God may use us. This all starts with prayer. Pray that God would expand your heart for the world and then watch Him work in and through you.