John the Apostle
John 13:36BSB·traditional attribution

“Lord, where are You going?” Simon Peter asked. Jesus answered, “Where I am going, you cannot follow Me now, but you will follow later.”

John Calvin Reformed @genevareformer

36. Lord, whither goest thou? This question is founded on that saying of Christ, I said to the Jews, that whither I go you cannot come, so now I say to you, (John 13:33.) From this it is evident how ignorant Peter was, who, after having been so frequently warned about Christ’s departure, was as greatly perplexed as if he had heard something new.

Matthew Henry Presbyterian @wholebiblehenry

In these verses we have, I. Peter's curiosity, and the check given to that. 1. Peter's question was bold and blunt (Joh 13:36): Lord, whither goest thou? referring to what Christ had said (Joh 13:33), Whither I go, you cannot come.

Commenting on John 13:36-38

John Gill Reformed Baptist @doctorgill

Simon Peter said unto him,.... One might have expected that Peter would have taken some notice of what Christ said last, about love to one another; but he passes over it, and takes no manner of notice of it; which did not arise from inattention to it, or from any dislike of it, or disaffection to it; for it appears from his whole conduct and...