Deuteronomy 16:9–16

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^aand 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.