Matthew
Matthew 3:17ESV·traditional attribution

and behold, a voice from heaven said, “This is my beloved Son, with whom I am well pleased.”

John Calvin Reformed @genevareformer

17. And, lo, a voice from heaven From that opening of the heavens, which has been already mentioned, a loud voice was heard, that its majesty might be more impressive. The public appearance of Christ, to undertake the office of Mediator, was accompanied by this announcement, “Avec ce tesmoignage et recommandation;” — “with this testimony and recommendation.” in which he was offered to us by...

Matthew Henry Presbyterian @wholebiblehenry

Our Lord Jesus, from his childhood till now, when he was almost thirty years of age, had lain hid in Galilee, as it were, buried alive; but now, after a long and dark night, behold, the Sun of righteousness rises in glory.

Commenting on Matthew 3:13-17

John Gill Reformed Baptist @doctorgill

And lo, a voice from heaven, saying,.... At the same time the heavens were opened, and the Spirit of God descended as a dove, and lighted on Christ, and whilst it abode upon him, an extraordinary voice was heard; hence the note of attention and admiration, "lo", is prefixed unto it, as before, to the opening of the heavens; being what was unusual and surprising...