Then Jeroboam instituted a festival in the eighth month, on the fifteenth day of the month, imitating the Festival that is in Judah. He went up to the altar that he built in Bethel, to sacrifice to the calves that he had made. He installed in Bethel the priests of the high places that he made.
So Solomon and all Israel with him celebrated the Festival at that time—a great congregation from the entrance of Hamath to the Wadi of Egypt—before Adonai Eloheinu, seven days and then seven more days—14 days in all.
They also kept the Feast of Sukkot as it is written and offered the prescribed number of daily burnt offerings according to the requirement for each day.
They found written in the Torah that Adonai had commanded through Moses that Bnei-Yisrael should dwell in sukkot during the feast of the seventh month.
Also you are to observe the Feast of Harvest, the firstfruits of your labors that you sow in the field, as well as the Feast of the Ingathering at the end of the year, when you gather your crops from the field.
He will do this in the seventh month, on the fifteenth day of the month, during the Feast, for seven days, for sin offering as well as burnt offering, grain offering as well as oil.”
“On the fifteenth day of the seventh month you are to have a sacred assembly. You are not to do any of your work, and you are to celebrate the Feast to Adonai for seven days.
Three times a year all your males are to appear before Adonai your God in the place He chooses—at the Feast of Matzot, the Feast of Shavuot, and the Feast of Sukkot. No one should appear before Adonai empty-handed—
These all died in faith without receiving the things promised—but they saw them and welcomed them from afar, and they confessed that they were strangers and sojourners on the earth.