2 Chronicles 28:25
And in every several city of Judah he made high places to burn incense unto other gods, and provoked to anger the Lord God of his fathers.
Cross-reference
2 Chronicles 28:3
Historical context
2 Chronicles 28:3 records Ahaz's child sacrifice — the same king's idolatry that led to high places.
2 Kings 16:12
Historical context
2 Kings 16:12 shows Ahaz approaching a pagan altar — another account of his idolatry.
2 Kings 17:11
Parallel
2 Kings 17:11 describes Israel's high places — a parallel sin to Ahaz's in Judah.