20 Immediately he preached the Christ in the synagogues, that He is the Son of God. 21 Then all who heard were amazed, and said, “Is this not he who destroyed those who called on this name in Jerusalem, and has come here for that purpose, so that he might bring them bound to the chief priests?” 22 But Saul increased all the more in strength, and confounded the Jews who dwelt in Damascus, proving that this Jesus is the Christ. (Acts 9:20–22, NKJV)
Saul’s conversion from persecutor to preacher was exemplary. His transformation of heart and life demonstrates the change of heart and life to which Christ calls every disciple (Eph. 4:20-24). 1) The immediacy of a disciple (v. 20). Saul immediately changed his life of sin against Jesus after being baptized to wash away his sins (Acts 22:16). He began preaching the gospel without delay. One does not become a Christian in phases. It is not a decision to be different, “one of these days.” Salvation in Christ brings an immediate change of faith and conduct (Rom. 6:4-6). 2) The identification of a disciple (v. 21). People recognized the change in Saul. Becoming a Christian means making drastic and dramatic changes in character and conduct. People will see the difference. 3) The increase of a disciple (v. 22). Saul grew in strength and vigorously preached and lived his faith that Jesus is the Christ. Christians must not shrink back into sin’s destruction, but “press forward toward the goal for the prize of the upward call of God in Christ Jesus” (Phil. 3:14).