1 Kings 12:21-24

21And when Rehoboam arrived in Jerusalem, he mobilized the whole house of Judah and the tribe of Benjamin—180,000 chosen warriors—to fight against the house of Israel and restore the kingdom to Rehoboam son of Solomon.

22But the word of God came to Shemaiah the man of God: 23“Tell Rehoboam son of Solomon king of Judah, all the house of Judah and Benjamin, and the rest of the people 24that this is what the LORD says: ‘You are not to go up and fight against your brothers, the Israelites. Each of you must return home, for this is My doing.’”

So they listened to the word of the LORD and turned back according to the word of the LORD.