John Chrysostom — as excerpted in the Catena Aurea on John 6:60-71

“(Hom. xlvii. 3) A speech of the greatest love: proving that Christ was more precious to them than father or mother. And that it might not seem to be said, from thinking that there was no one whose guidance they could look to, he adds, Thou hast the words of eternal life: which shewed that he remembered his Master’s words, I will raise Him up, and, hath eternal life. The Jews said, Is not this the Son of Joseph? how differently Peter: We believe and are sure, that Thou art that Christ, the Son of the living God.”