Deuteronomy 16:13-16

13“1You shall 2celebrate the Feast of Booths seven days after you have gathered in from your threshing floor and your wine vat; 14and you shall 3rejoice in your feast, you and your son and your daughter and your male and female servants and the Levite and the stranger and the 4orphan and the widow who are in your 5towns. 15Seven days you shall celebrate a feast to the Lord your God in the place which the Lord chooses, because the Lord your God will bless you in all your produce and in all the work of your hands, so that you will be altogether joyful.

16“6Three 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 7they shall not appear before the Lord empty-handed.