John 4:12

Art Thou greater, &c. Observe, the Samaritans were Assyrians whom Salmanasar had brought into Samaria instead of the original inhabitants, the ten tribes of Israel, whom he carried away into Assyria. These Assyrians, however, wished, when the Jewish state was in a flourishing condition, to be accounted Jews (Jos., Ant., lib. 11, cap. ult.), both because they dwelt in the portion of the Holy Land which had been allotted to the tribe of Ephraim, and because they were commingled with the Israelites who had been left in the country. Another reason was because they partly followed the Jewish religion. For they worshipped the God of Israel, together with the Assyrian idols (2 Kings 7) This then was why the woman called Jacob our father, as though the Samaritans were Israelites, and descended from him. The meaning then is, "Jacob had no better water than this, for if he had had, he surely would have drank of it, both himself, and his children. If thou, therefore, 0 Jesus, art able to give, or to find better water than this, Thou must needs be greater than the Patriarch Jacob, our father." So S. Chrysostom. By degrees did Jesus raise the woman's mind, so that she should at length acknowledge Him to be the Messiah. For from what He had said, If thou knewest who it is that saith to thee, Give me to drink, thou wouldest have asked of Him, and He would have given thee living water, the woman conjectured, or suspected, that Jesus was making Himself to be greater than Jacob.