John 4:25,26

25. The woman said to him, I know that Messias comes, which is called Christ; when he is come, he will tell us all things. 26. Jesus said to her, I that speak to you am he.

CHRYS. The woman was struck with astonishment at the loftiness of His teaching, as her words show: The woman said to Him, I know that Messias comes, which is called Christ.

AUG. Unctus in Latin, Christ in Greek, in the Hebrew Messias. She knew then who could teach her, but did not know Who was teaching her. When He is come, He will tell us all things: as if she said, The Jews now contend for the temple, we for the mountain; but He, when He comes, will level the mountain, overthrow the temple, and teach us how to pray in spirit and in truth.

CHRYS. But what reason had the Samaritans for expecting Christ's coming? They acknowledged the books of Moses, which foretold it. Jacob prophesies of Christ, The scepter shall not depart from Judah, nor a lawgiver from beneath his feet, until Shiloh come. And Moses says, The Lord your God shall raise up a Prophet from the midst of you, of your brethren.

ORIGEN. It should be known, that as Christ rose out of the Jews, not only declaring but proving Himself to be Christ; so among the Samaritans there arose one Dositheus by name, who asserted that he was the Christ prophesied of.

AUG. It is a confirmation to discerning minds that the five senses were what were signified by the five husbands, to find the woman making five carnal answers, and then mentioning the name of Christ.

CHRYS. Christ now reveals Himself to the woman: Jesus said to her, I that speak to you am He. Had He told the woman this to begin with, it would have appeared vanity. Now, having gradually awakened her to the thought of Christ, His disclosure of Himself is perfectly opportune. He is not equally open to the Jews, who ask Him, If You be the Christ, tell us plainly; for this reason, that they did not ask in order to learn, but to do Him injury; whereas she spoke in the simplicity of her heart.