John Gill Commentary Luke 3:22

"and the Holy Spirit descended in a bodily form, as a dove, upon him, and a voice came out of heaven, Thou art my beloved Son; in thee I am well pleased." — Luke 3:22 (ASV)

And the Holy Ghost descended in a bodily shape In a corporeal form, in a visible manner, and was seen with bodily eyes, at least by John the administrator; to whom this was a signal of his being the Messiah, and a fresh confirmation of it:

like a dove upon him ; either in the form of a dove, or this corporeal form, whatever it was, descended and hovered on him as a dove does:

and a voice came from heaven ; at the same time the Holy Ghost came down upon him; which said,

you are my beloved Son, in you I am well pleased : and was the voice of the Father; and the whole of this was an answer of Christ's prayer; (See Gill on Matthew 3:16) (See Gill on Matthew 3:17) (See Gill on Mark 1:11).