But Jesus said, “It should be done, for we must carry out all that God requires” (Matthew 3:15).
John the Baptizer called the Jews to repent of their sins and to turn to God (Matthew 3:2). He preached that “people should be baptized to show that they had repented of their sins and turned to God to be forgiven” (Luke 3:3). “And when they confessed their sins, he baptized them in the Jordan River” (Matthew 3:6). According to John, baptism is an outward symbol of inward repentance and reveals a commitment to live a holy life.
Jesus was sinless (1 John 3:5), so John refused to baptize Him because he felt unqualified (Matthew 3:11-14). But Jesus insisted (Matthew 3:15).
Why was Jesus baptized when He didn’t need to be? Did it signify Jesus’ acceptance of the suffering that He would endure as Savior, foreshadowing His death and resurrection? (Mark 10:38; Luke 12:50). Did it allow Him to identify with the sinful people He came to save? Jesus Himself tells us why He did it: “It should be done, for we must carry out all that God requires” (Matthew 3:15).
Water baptism does not save us (Ephesians 2:8-9), but that doesn’t mean that it’s unimportant or unnecessary. Once saved, you need to testify outwardly of your inward repentance and affirm your commitment to live a holy life (Romans 6:3-6). Baptism allows you to testify publicly that you’re a believer in Jesus (Galatians 3:27; Colossians 2:12).
It boils down to simple obedience. If Jesus obeyed the Father’s command, why wouldn’t you?