Leviticus 23:33-36

Again the LORD said to Moses, “Tell the people of Israel: ‘On the fifteenth day of the seventh month is the Feast of Shelters. This feast to the LORD will continue for seven days. There will be a holy meeting on the first day; do not do any work. You will bring an offering made by fire to the LORD each day for seven days. On the eighth day you will have another holy meeting, and you will bring an offering made by fire to the LORD. This will be a holy meeting; do not do any work.