Matthew 3:13-17 – “Then Jesus came from Galilee to the Jordan to be baptized by John. But John tried to deter him, saying, “I need to be baptized by you, and do you come to me?” Jesus replied, “Let it be so now; it is proper for us to do this to fulfill all righteousness.” Then John consented. As soon as Jesus was baptized, he went up out of the water. At that moment heaven was opened, and he saw the Spirit of God descending like a dove and alighting on him. And a voice from heaven said, “This is my Son, whom I love; with him I am well pleased.”
If John was baptizing for repentance and Jesus was without sin, why would he have to be baptized? Jesus’ meaning in Matthew 3:15 was not a statement that baptism is necessary for salvation, nor that he needed to repent of anything. The intent of the Jewish people regarding baptism was to signify their readiness to follow the will of God. So by engaging in this action, by including himself in this tradition of his people, Jesus “fulfills all righteousness,” not merely by the physical act, but by the spiritual implications of it.
There was no written legal requirement for Jesus to be baptized in order to inaugurate his ministry. Jesus followed the law, but he also followed the traditions in line with the heart of the law. By this act, Jesus proclaims the beginning of his ministry.