John the Apostle
John 8:28BSB·traditional attribution

So Jesus said, “When you have lifted up the Son of Man, then you will know that I am He, and that I do nothing on My own, but speak exactly what the Father has taught Me.

John Calvin Reformed @genevareformer

28. When you shall have exalted the Son of man. Offended at that stupidity which the Evangelist has described, Christ again declares that they do not deserve that he should open his mouth to speak to them any more. “Qu’il ouvre plus sa bouche pour leur dire rein.” “You now,” says he, “have all your senses — as it were — fascinated, and, therefore, you...

Matthew Henry Presbyterian @wholebiblehenry

Christ here gives fair warning to the careless unbelieving Jews to consider what would be the consequence of their infidelity, that they might prevent it before it was too late; for he spoke words of terror as well as words of grace. Observe here, I. The wrath threatened (Joh 8:21): Jesus said again unto them that which might be likely to do them good.

Commenting on John 8:21-30

John Gill Reformed Baptist @doctorgill

Then said Jesus to those Jews that believed on him,.... For he knew instantly who they were, and when they believed on him; and therefore he immediately turned himself to them, and thus addressed them; if ye continue in my word; meaning the Gospel, called his, because he was both the author, and preacher, and sum, and substance of it: and to continue in it...