I have seen and I testify that this is the Son of God
How many of us can stand up and say the same as John? On this Resurrection Morning we have more revelation that had John the Baptist. The man Christ Jesus has been executed on a cross and has risen from the dead. John had heard a voice from heaven declare, "This is my son, whom I love, with whom I am well pleased", but we have the historical record and the testimony of millions that Jesus Christ is risen from the dead. Alleluia!
Notice that it is not 'a' son of God, but 'the' Son of God. Jesus is unique. He is pictured as the sacrificial lamb without blemish in hundreds of years of Jewish sacrifices. Now that 'picture' is realized. The lambs stayed dead after sacrifice, but He is risen! This signifies that the sacrifice is enough in the way that the blood of bulls and beasts could never be. No animal was ever raised from the dead since none of those sacrifices was ever enough. But now! None of us need be still in our sins, since sufficient price to redeem us has been paid.