1Kgs.12.33

So he offered upon the altar which he had made in Bethel the fifteenth day of the eighth month, even in the month which he had devised of his own heart; and ordained a feast unto the children of Israel: and he offered upon the altar, and burnt incense.

1Kgs.12.33

This was strictly his own idea to compete with the feast in Judah; and he carried it off with flair, a festival exclusively for Israel, Jeroboam himself leading the worship at the Altar.

1Kgs.12.33

So he made offerings on the altar which he had made at Bethel on the fifteenth day of the eighth month, in the month which he had devised in his own heart. And he ordained a feast for the children of Israel, and offered sacrifices on the altar and burned incense.

1Kgs.12.33

So on the appointed day in midautumn, a day that he himself had designated, Jeroboam offered sacrifices on the altar at Bethel. He instituted a religious festival for Israel, and he went up to the altar to burn incense.