2 Chronicles 25:7
But there came a man of God to him, saying, O king, let not the army of Israel go with thee; for the Lord is not with Israel, to wit, with all the children of Ephraim.
Cross-reference
2 Chronicles 25:15 records another prophetic rebuke to Amaziah for idolatry, showing a series of warnings to this king.
In 2 Chronicles 13:12, Abijah declares God is with Judah against Israel — reinforcing that God is not with the northern kingdom, as warned here.
In 2 Chronicles 19:2, Jehu rebukes Jehoshaphat for allying with wicked Israel — the same sin of alliance with the northern kingdom that Amaziah is warned against.
In 2 Chronicles 11:4, the same command not to fight Israel appears, directly echoing the principle of avoiding conflict with the northern kingdom.
In 1 Kings 12:28, Jeroboam sets up golden calves — the idolatry that caused God's absence from Israel, the reason Amaziah must not ally with them.
In 1 Kings 13:1, a 'man of God' confronts Jeroboam — the same title and role as the prophet warning Amaziah here.
In 1 Kings 12:24, God similarly commands Rehoboam not to fight Israel, reinforcing a pattern of divine restraint regarding the northern kingdom.