Eusebius of Caesarea : He calls them the house of Jacob as not being worthy of the name of their forefather. Rather, "those called by the name Israel" are not really Israel, and those bearing that name are not called such here. And he adds, "and coming forth from the water of Judah." For they had nothing of the worthiness of the patriarchal soul, although they were descended from his fluid and bodily seed. For they were children only in the physical and carnal sense and not true children of the soul. But "Judah through the water" means the "kingly race" from David's line that in the days of the prophets remained in Jerusalem. They were those who, being not truly worthy of these names, used "Jacob" and "Israel" and "Judah" falsely; for they were those who praised the name of the Lord and made mention of the God of Israel with only their lips and mouth.… For they did "not" take their oaths "in truth" if they were [at the same time] consulting oracles. But they even thought they were being loyal to the city which was dedicated to God when, in fact, they were resisting God and performing this hypocrisy. — COMMENTARY ON Isaiah 2:33 Jerome : (Chapter 48, Verses 1 and following) Listen to this, house of Jacob, who are called by the name of Israel, and come from the waters of Judah: who swear in the name of the Lord, and remember the God of Israel, not in truth or justice. For they are called from the holy city: and they are established upon the Lord, the name of the God of Israel. These things I foretold to the Chaldeans and the Babylonians, and it is necessary for what I have spoken through my prophets to be fulfilled. But you, O house of Jacob, who are called by the name of Israel, and who come forth from the waters of Judah, and the rest that follows, listen attentively to what I am about to say. And it should be noted that he does not call them Jacob, but the house of Jacob; nor Israel, who are falsely called by this name, as they have no need for a name. And concerning the waters, he says, you come forth from the waters of Judah, calling them more reverently waters instead of seed, so as not to show that they are sons of the patriarchs in terms of virtue, but of the flesh. And rightly he called the waters of Judah, because at that time it was the only tribe that remained in the land of Judah; and the seed of David was preserved as king. You swore, he said, in the name of the Lord, not to honor the Lord; but taking his name, you commit injustice, while you want him to be a witness to your lie, and you rest in the holy city, and rely on the Lord of Israel; so that you boast to be the inhabitants of the city of Jerusalem, and to have the privilege of the Lord of hosts, when you assume the names of the empty Jacob, Israel, and the holy city, and the omnipotent God. — Commentary on Isaiah