Contradiction with 2 Kings 16:2-4
Contradicts Hezekiah's faithfulness by describing Ahaz's unfaithfulness and idolatry.
2 Kings 16:2-4: Twenty years old [was] Ahaz when he began to reign, and reigned sixteen years in Jerusalem, and did not [that which was] right in the sight of the LORD his God, like David his father.
Contradiction with 2 Kings 21:1-3
Manasseh, Hezekiah's son, did evil in contrast to Hezekiah's faithfulness.
2 Kings 21:1-3: Manasseh [was] twelve years old when he began to reign, and reigned fifty and five years in Jerusalem. And his mother's name [was] Hephzibah.
Contradiction with 1 Kings 11:4
Solomon's heart was turned away from the Lord, unlike Hezekiah's steadfastness.
1 Kings 11:4: For it came to pass, when Solomon was old, [that] his wives turned away his heart after other gods: and his heart was not perfect with the LORD his God, as [was] the heart of David his father.
Contradiction with Numbers 14:22
Israelites' constant testing and disobedience contrast Hezekiah's obedience.
Numbers 14:22: Because all those men which have seen my glory, and my miracles, which I did in Egypt and in the wilderness, and have tempted me now these ten times, and have not hearkened to my voice;
Contradiction with Judges 2:17
Israel's failure to hearken contrasts with Hezekiah's adherence to God's commandments.
Judges 2:17: And yet they would not hearken unto their judges, but they went a whoring after other gods, and bowed themselves unto them: they turned quickly out of the way which their fathers walked in, obeying the commandments of the LORD; [but] they did not so.