The most evident illustration would be the baptism of Jesus. We can find the baptism of Jesus in Matthew, Luke and Mark. The baptism of Jesus happens amid the time John is baptizing through water individuals at the Jordan. John was doing this for individuals for repentance. Notwithstanding, the main individual that did not need this is Jesus, since Jesus is the just a single without transgression as indicated by the gospel authors. This is the reason John felt odd in baptizing Jesus. Jesus permits it, since Jesus is associating with his kin, as sinner.
After this baptism, Jesus went into his public ministry. He "started" his work as the deliverer of the world, as per the accounts. From this point of view, there was a change of amazing magnitude in the character of Jesus.