John Chrysostom
“To us who ate and drank with Him.” This is the greatest testimony to the Resurrection.
“And He granted Him to appear, not to all the people, but to witnesses chosen beforehand by God, to us.” Although He Himself chose them, Peter attributes even this to God. He says, “chosen beforehand.”
See how he proves the Resurrection: by eating. Why, after the Resurrection, did Christ perform no sign, but eat and drink? Because the Resurrection itself was a great sign. To prove its reality, nothing could be greater than that He ate and drank.