1 Kings 9:25 References

25 Now athree times in a year Solomon offered burnt offerings and peace offerings on the altar which he built to the Lord, burning incense with them on the altar which was before the Lord. So he finished the house.

a Exodus 23:14-17, Deuteronomy 16:16

Exodus 23

14 "aThree times a year you shall celebrate a feast to Me.
15 "You shall observe athe Feast of Unleavened Bread; for seven days you are to eat unleavened bread, as I commanded you, at the appointed time in the bmonth Abib, for in it you came out of Egypt. And cnone shall appear before Me empty-handed.
16 "Also you shall observe athe Feast of the Harvest of the first fruits of your labors from what you sow in the field; also the Feast of the Ingathering at the end of the year bwhen you gather in the fruit of your labors from the field.
17 "aThree times a year all your males shall appear before the Lord GOD.

Deuteronomy 16

16 "aThree times in a year all your males shall appear before the Lord your God in the place which He chooses, at the Feast of Unleavened Bread and at the Feast of Weeks and at the Feast of Booths, and bthey shall not appear before the Lord empty-handed.