And just as Jesus was coming up out of the water, he saw the heavens splitting apart and the Spirit descending on him like a dove. And a voice came from heaven: “You are my one dear Son; in you I take great delight.” – Mark 1:10-11
Jesus had just been baptized. The perfect sinless Son of God had received the baptism of John—which was a baptism of repentance. Why would one who is perfect have to be baptized? In Matthew 3:15 we find out that it was to fulfill all righteousness. Was there something Jesus needed to do, in order to attain a more righteous state? Or, was it to fulfill a religious requirement that God had set out? I don’t believe that is what Jesus meant.
In Leviticus 26:40, God commanded his people to confess their sins and the sins of their fathers. Daniel, Isaiah, Jeremiah, Nehemiah and others would confess their sins, as well as the sins of their people and their ancestors. Was Jesus being baptized on behalf of the sinfulness of His nation, His chosen people, His forefathers? Was Jesus’ baptism a prefiguring of The Son of God taking away our sins through His death?
Either way, God was so pleased with His son that heaven split open and the Spirit of God descended on Jesus that day. It marked Jesus in the eyes of the people, but I think God was so pleased and proud of His son that He had to rip open heaven for a minute and touch Him. The veil that separates heaven and earth was split just like Jesus will split it again one day.
The Father was shouting – “THAT’S MY BOY!”