Deuteronomy 16:9-15

9“1You shall count seven weeks for yourself; you shall begin to count seven weeks from the time you begin to put the sickle to the standing grain. 10Then you shall 2celebrate the Feast of Weeks to the Lord your God with a 3voluntary offering of your hand in a proportional amount, which you shall give just as the Lord your God blesses you; 11and you shall 4rejoice before the Lord your God, you, your son and your daughter, and your male and female slaves, and 5the Levite who is in your 6town, and 7the stranger, the 8orphan, and the widow who are in your midst, at the place where the Lord your God chooses to establish His name. 129You shall also remember that you were a slave in Egypt, and you shall be careful and 10comply with these statutes.

13“11You shall 12celebrate the Feast of 13Booths for seven days when you have gathered in from your threshing floor and your wine vat; 14and you shall 14rejoice in your feast, you, your son and your daughter, and your male and female slaves, and the Levite, the stranger, the 15orphan, and the widow who are in your 16towns. 15For seven 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.