{To fulfil all righteousness} (pl(8872)(9373)ai p(8373)an
dikaiosun(886e)). The explanation of Jesus satisfies John and he
baptizes the Messiah though he has no sins to confess. It was
proper (prepon) to do so else the Messiah would seem to hold
aloof from the Forerunner. Thus the ministries of the two are
linked together.