J. E. Davis preaches about the abundant life as the core teaching of Jesus, emphasizing the principle of multiplying life for moral force. Jesus calls for a life of fruitfulness, where disciples are willing to give up everything for the salvation of others and zealously extend the kingdom. The true mark of discipleship is bearing much fruit, evangelism, missions, and giving, as seen in the lives of various historical figures and missionaries who poured out their lives for others.