Now when all the people were baptized, and when Jesus also had been baptized and was praying, the heavens were opened,  and the Holy Spirit descended on him in bodily form, like a dove; and a voice came from heaven, "You are my beloved Son; with you I am well pleased."
It is strange, the other gospels don’t mention Jesus praying when the Holy Spirit descends upon him. Luke does. Not sure what to make of that. Except to say, that Christian prayer is always the work of the Holy Spirit, and is always accompanied by the same, perhaps though not liting on your shoulder as a dove.
And the Holy Spirit descended on him in bodily form, like a dove. And for this reason the protestant world is bent on crucifying doves, anything but Jesus finds its place in that hideous execution where the protestant world is concerned. Bodily form, God is Spirit as scripture says. The Spirit is God. He is invisible and immortal according to the first chapter of first timothy, but this does not mean he cannot take on bodily forms, he can take on any form he wants, whenever he wants. So he appears walking in the Garden of Eden. Here the Holy Spirit takes form so as to be visible. The Father speaks. The Trinity makes its manifestation.