Divrey Hayamim Bais 12:1-2

Orthodox Jewish Bible

12 And it came to pass, when Rechav’am had established the malchut, and had strengthened himself, he forsook the Torat Hashem, and kol Yisroel with him.

² And it came to pass, that in the shanah hachamishit of Melech Rechav’am Shishak Melech Mitzrayim came up against Yerushalayim, because they were unfaithful to Hashem,