2 Chronicles 32 - Even though Hezekiah was faithful to God he still faced an enemy invasion. But, Hezekiah knew and would learn more that God doesn't leave His own. Hezekiah wisely removed access to a good water supply from the enemy. He also encouraged his people to trust the Lord for the enemy only had "an arm of flesh" but Judah had the presence of the Lord God on their side! God defeated the enemy. After Hezekiah's illness and recover we sadly read that "Hezekiah did not repay according to the favor shown him..." verse 25.
2 Chronicles 33 - In this chapter which describes Manasseh's incredible wickedness against the Lord we read of God humbling Manasseh and then the king humbling himself before God, verse 12. God healed Manasseh and gave him another chance! Though Manasseh showed genuine repentance, he could not undo all the evil influence he had over the nation of Judah. His son Amon only followed his father's sin, not his father's humility.