John the Apostle
John 8:57BSB·traditional attribution

Then the Jews said to Him, “You are not yet fifty years old, and You have seen Abraham?”

John Calvin Reformed @genevareformer

57. Thou art not yet fifty years old. They endeavor to refute Christ’s saying, by showing that he had asserted what was impossible, when he who was not yet fifty years of age makes himself equal to Abraham, who died many centuries before.

Matthew Henry Presbyterian @wholebiblehenry

In these verses we have, I. The doctrine of the immortality of believers laid down, Joh 8:51. It is ushered in with the usual solemn preface, Verily, verily, I say unto you, which commands both attention and assent, and this is what he says, If a man keep my sayings, he shall never see death. Here we have, 1.

Commenting on John 8:51-59

Albert Barnes Presbyterian @notesbybarnes

Verse 57. Fifty years old. Jesus is supposed to have been at this time about thirty-three. It is remarkable that when he was so young they should have mentioned the number fifty, but they probably designed to prevent the possibility of a reply. Had they said forty they might have apprehended a reply, or could not be so certain that they were correct. Hast thou seen Abraham?