New Revised Standard Version
He went up to the altar that he had made in Bethel on the fifteenth day in the eighth month, in the month that he alone had devised; he appointed a festival for the people of Israel, and he went up to the altar to offer incense.

New American Bible
Jeroboam went up to the altar he built in Bethel on the fifteenth day of the eighth month, the month he arbitrarily chose. He established a feast for the Israelites, and he went up to the altar to burn incense.

Douay-Rheims Bible
And he went up to the altar, which he had built in Bethel, on the fifteenth day of the eighth month, which he had devised of his own heart: and he ordained a feast to the children of Israel, and went up on the altar to burn incense.

And he went up to the altar, which he had built in Bethel, on the fifteenth day of the eighth month, which he had devised of his own heart: and he ordained a feast to the children of Israel, and went up on the altar to burn incense.

offered upon the altar.

1 Kings 12:32 And he appointed a feast in the eighth month, on the fifteenth day of the month, after the manner of the feast that was celebrated in Juda. And going up to the altar, he did in like manner in Bethel, to sacrifice to the calves, which he had made: and he placed in Bethel priests of the high places, which he had made.

in the month

Numbers 15:39 That when they shall see them, they may remember all the commandments of the Lord, and not follow their own thoughts and eyes going astray after divers things,

Psalm 106:39 And was defiled with their works: and they went aside after their own inventions.

Isaiah 29:13 And the Lord said: Forasmuch as this people draw near me with their mouth, and with their lips glorify me, but their heart is far from me, and they have feared me with the commandment and doctrines of men:

Matthew 15:6 And he shall not honour his father or his mother: and you have made void the commandment of God for your tradition.

Mark 7:13 Making void the word of God by your own tradition, which you have given forth. And many other such like things you do.

he offered

1 Kings 13:1 And behold there came a man of God out of Juda, by the word of the Lord, to Bethel, when Jeroboam was standing upon the altar, and burning incense.

1 Samuel 13:12 I said: Now will the Philistines come down upon me to Galgal, and I have not appeased the face of the Lord. Forced by necessity, I offered the holocaust.

2 Chronicles 26:6 Moreover he went forth and fought against the Philistines, and broke down the wall of Geth, and the wall of Jabnia, and the wall of Azotus: and he built towns in Azotus, and among the Philistines.