John the Apostle
John 4:19ESV·traditional attribution

The woman said to him, “Sir, I perceive that you are a prophet.

John Calvin Reformed @genevareformer

19. Sir, I perceive that thou art a Prophet. The fruit of the reproof now becomes evident; for not only does the woman modestly acknowledge her fault, but, being ready and prepared to listen to the doctrine of Christ, which she had formerly disdained, she now desires and requests it of her own accord.

Matthew Henry Presbyterian @wholebiblehenry

We have here an account of the good Christ did in Samaria, when he passed through that country in his way to Galilee. The Samaritans, both in blood and religion, were mongrel Jews, the posterity of those colonies which the king of Assyria planted there after the captivity of the ten tribes, with whom the poor of the land that were left behind, and many other Jews afterwards, incorporated themselves.

Commenting on John 4:4-26

John Gill Reformed Baptist @doctorgill

The woman saith unto him, Sir,.... With another countenance, and a different air and gesture, with another accent and tone of speech, dropping her scoffs and jeers: I perceive that thou art a prophet; such an one as Samuel was, who could tell Saul what was in his heart, and that his father's asses were found, and where they were, Sa1 9:19; and as Elisha...