Jeroboam thought to himself, "The kingdom will now likely revert to the house of David.
If these people go up to offer sacrifices at the temple of the LORD in Jerusalem,1 they will again give their allegiance to their lord, Rehoboam king of Judah. They will kill me and return to King Rehoboam."
References for 1 Kings 12:27
After seeking advice, the king made two golden calves.2 He said to the people, "It is too much for you to go up to Jerusalem. Here are your gods, O Israel, who brought you up out of Egypt."3
References for 1 Kings 12:28
One he set up in Bethel,4 and the other in Dan.5
References for 1 Kings 12:29
And this thing became a sin;6 the people went even as far as Dan to worship the one there.
References for 1 Kings 12:30