John 4:22

The Israelites, on account of their innumerable sins, had been delivered by the Almighty into the hands of the king of Assyria, who lead them all away captives into Babylon and Medea, and sent other nations whom he had collected from different parts, to inhabit Samaria. But the Almighty, to shew to all nations that he had not delivered up these his people for want of power to defend, but solely on account of their transgressions, sent lions into the land to persecute these strangers. The Assyrian king upon hearing this, sent them a priest to teach them the law of God; but neither after this did they depart wholly from their impiety, but in part only: for many of them returned again to their idols, worshipping at the same time the true God. It was on this account that Christ preferred the Jews before them, saying, that salvation is of the Jews, with whom it was the chief principle to acknowledge the true God, and hold every denomination of idols in detestation; whereas, the Samaritans by mixing the worship of the one with the other, plainly shewed that they held the God of the universe in no greater esteem than their dumb idols. (St. John Chrysostom in St. Thomas Aquinas)