The Bible records: "As soon as Jesus was baptized, he went up out of the water. At that moment, heaven was opened, and he saw the Spirit of God descending like a dove and alighting on him.

Baptism was not a new idea ... heaven was opened God’s spirit descended on Jesus God’s voice was heard A dove, often used as a symbol of peace, represents God’s spirit descending on Jesus.

And Jesus, when he was baptized, went up straightway out of the water: and, lo, the heavens were opened unto him, and he saw the Spirit of God descending like a dove, and lighting upon him ...

Pupils could be asked if they can see how the trinity is connected to the baptism of Jesus (dove, voice, Jesus). Look at art works - such as the one in the clip - about this Bible story.