1 Kings 12:26-30

26And Jeroboam said in his heart, “Now the kingdom may return to the house of David:

27If these people go up to offer sacrifices in the house of the Lord at Jerusalem, then the heart of this people will turn back to their lord, Rehoboam king of Judah, and they will kill me and go back to Rehoboam king of Judah.”

28Therefore the king asked advice, made two calves of gold, and said to the people, “It is too much for you to go up to Jerusalem. Here are your gods, O Israel, which brought you up from the land of Egypt!”

29And he set up one in Bethel, and the other he put in Dan.

30Now this thing became a sin, for the people went to worship before the one as far as Dan.