What part of God descended on Jesus in a bodily form?

ANSWER

The Holy Ghost

Matthew 3 :

(21) When all the people were being baptized, Jesus was baptized too. And as he was praying, heaven was opened (22) and the Holy Spirit descended on him in bodily form like a dove. And a voice came from heaven: “You are my Son, whom I love; with you I am well pleased."
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