1 Kings 12:21-33
When Rehobo'am came to Jerusalem, he assembled all the house of Judah, and the tribe of Benjamin, a hundred and eighty thousand chosen warriors, to fight against the house of Israel, to restore the kingdom to Rehobo'am the son of Solomon. But the word of God came to Shemai'ah the man of God: "Say to Rehobo'am the son of Solomon, king of Judah, and to all the house of Judah and Benjamin, and to the rest of the people, 'Thus says the LORD, You shall not go up or fight against your kinsmen the people of Israel. Return every man to his home, for this thing is from me.'" So they hearkened to the word of the LORD, and went home again, according to the word of the LORD. Then Jerobo'am built Shechem in the hill country of E'phraim, and dwelt there; and he went out from there and built Penu'el. And Jerobo'am said in his heart, "Now the kingdom will turn back to the house of David; if this people go up to offer sacrifices in the house of the LORD at Jerusalem, then the heart of this people will turn again to their lord, to Rehobo'am king of Judah, and they will kill me and return to Rehobo'am king of Judah."
So the king took counsel, and made two calves of gold. And he said to the people, "You have gone up to Jerusalem long enough. Behold your gods, O Israel, who brought you up out of the land of Egypt." And he set one in Bethel, and the other he put in Dan. And this thing became a sin, for the people went to the one at Bethel and to the other as far as Dan. He also made houses on high places, and appointed priests from among all the people, who were not of the Levites. And Jerobo'am appointed a feast on the fifteenth day of the eighth month like the feast that was in Judah, and he offered sacrifices upon the altar; so he did in Bethel, sacrificing to the calves that he had made. And he placed in Bethel the priests of the high places that he had made. He went up to the altar which he had made in Bethel on the fifteenth day in the eighth month, in the month which he had devised of his own heart; and he ordained a feast for the people of Israel, and went up to the altar to burn incense.