John Mark
Mark 8:29BSB·traditional attribution

“But what about you?” Jesus asked. “Who do you say I am?” Peter answered, “You are the Christ.”

Matthew Henry Presbyterian @wholebiblehenry

We have read a great deal of the doctrine Christ preached, and the miracles he wrought, which were many, and strange, and well-attested, of various kinds, and wrought in several places, to the astonishment of the multitudes that were eye-witnesses of them.

Commenting on Mark 8:27-38

John Gill Reformed Baptist @doctorgill

And he saith unto them, but whom say ye that I am?.... It was for the sake of this question he put the former; See Gill on Mat 16:15; and Peter answereth and saith unto him, thou art the Christ; the Messiah that was long ago promised and so often prophesied of in the books of Moses and the prophets; and whom the Jews have so much and long expected.

Adam Clarke Methodist @methodicalclarke

Thou art the Christ - Three MSS. and some versions add, the Son of the living God.