'King of Judah' in the Bible

During the reign of Jotham's son Ahaz, Uzziah's grandson, king of Judah, King Rezin of Aram and Remaliah's son Pekah, king of Israel, approached Jerusalem and waged war against it, but they could not mount an attack against it.

"Tell Hezekiah, king of Judah, "This is what the mighty king, the king of Assyria, has to say: What is this "guarantee" that makes you yourself rely on it? Do you really think that guarantees alone can withstand strategy and military strength? On whom are you now depending, that you're rebelling against me?

When he heard it, he returned and sent messengers to Hezekiah: "Say this to Hezekiah king of Judah: "Don't let your God on whom you depend deceive you when he says, "Jerusalem will not be handed over to the king of Assyria."