The common factor in the experience of Finney, Moody, and Graham was their total submission to god. they did not need to be more resolved to seek God's will; they needed to be more yielded in faith to trust God and to do his will. with their absolute submission to God came a profound assurance of God's presence. Their phenomenal success as spiritual leadewrs was not based on their superior oratorical abilities, or on their organizational genius. Rather, their amazing success as spiritual leaders can be traced to their consummate submission to Christ.
Source: Spiritual Leadership by Henry Blackaby pg 103,