When Jesus came in the flesh (incarnation) to ‘fulfill all righteousness’ (Matthew 3:15) a very powerful and glorious thing happened. He came as God, Priest, Man and Sacrifice. That is complete fulfillment. There is nothing left to do to please the Father. Our only response is to respond to what has been done.
“The time promised by God has come at last!” he announced. “The Kingdom of God is near! Repent of your sins and believe the Good News!” Jesus