Deuteronomy 16:13-16

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.