Deuteronomy 16:7-17

7Cook the meat, and eat it at the place the Lord your God will choose. In the morning you may go back to your tents.

8For six days eat unleavened bread, and on the seventh day hold a religious assembly dedicated to the Lord your God. Don’t do any work that day.

9Count seven weeks from the time you start harvesting grain.

10Then celebrate the Festival of Weeks to the Lord your God. Bring a freewill offering in proportion to the blessings the Lord your God has given you.

11Enjoy yourselves in the presence of the Lord your God along with your sons, daughters, male and female slaves, the Levites who live in your cities, the foreigners, orphans, and widows who live among you. Enjoy yourselves at the place the Lord your God will choose for his name to live.

12Remember that you were slaves in Egypt, and obey these laws carefully.

13After you have gathered the grain from your threshing floor  and made your wine, celebrate the Festival of Booths for seven days.

14Enjoy yourselves at the festival along with your sons, daughters, male and female slaves, the Levites, foreigners, orphans, and widows who live in your cities.

15For seven days you will celebrate this festival dedicated to the Lord your God in the place he will choose. You will enjoy yourselves, because the Lord your God will bless all your harvest and all your work.

16Three times a year all your men must come into the presence of the Lord your God at the place he will choose: at the Festival of Unleavened Bread, the Festival of Weeks, and the Festival of Booths. But no one may come into the presence of the Lord without an offering.

17Each man must bring a gift in proportion to the blessings the Lord your God has given him.