Deuteronomy 16:11, 14-15

You shall rejoice before the LORD your God, you and your son and your daughter, your male servant and your female servant, the Levite who is within your gates, the stranger and the fatherless and the widow who are among you, at the place where the LORD your God chooses to make His name abide.

And you shall rejoice in your feast, you and your son and your daughter, your male servant and your female servant and the Levite, the stranger and the fatherless and the widow, who are within your gates. Seven days you shall keep a sacred 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 surely rejoice.