Parallel
2 Chronicles 12:1
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
And it came to pass, when Rehoboam had established the kingdom, and had strengthened himself, he forsook the law of the Lord, and all Israel with him.
After Rehoboam had established his sovereignty and royal power, he and all Israel (note: That is, Judah; in 2 Chronicles, Judah is occasionally called Israel, as representative of the true Israel.) with him forsook the Law of the LORD.