Contradiction with 1 Kings 15:3
This verse states that Abijam walked in all the sins of his father, contrasting Hezekiah's righteousness.
1 Kings 15:3: And he walked in all the sins of his father, which he had done before him: and his heart was not perfect with the LORD his God, as the heart of David his father.
Contradiction with 2 Kings 21:2
Manasseh did evil in the sight of the LORD, opposite to Hezekiah's commendable actions.
2 Kings 21:2: And he did [that which was] evil in the sight of the LORD, after the abominations of the heathen, whom the LORD cast out before the children of Israel.
Contradiction with Proverbs 14:12
Suggests there is a way that seems right but leads to death, implied contradiction with Hezekiah's perceived righteousness.
Proverbs 14:12: There is a way which seemeth right unto a man, but the end thereof [are] the ways of death.
Contradiction with Isaiah 5:20
Woe to those who call evil good and good evil, potentially challenging Hezekiah's judgment as described in 2 Chronicles 29:2.
Isaiah 5:20: Woe unto them that call evil good, and good evil; that put darkness for light, and light for darkness; that put bitter for sweet, and sweet for bitter! [call...: Heb. say concerning evil, It is good, etc]