Deuteronomy 16:13-17

¹³"You shall keep the feast of booths seven days, when you make your ingathering from your threshing floor and your wine press; ¹⁴you shall rejoice in your feast, you and your son and your daughter, your manservant and your maidservant, the Levite, the sojourner, the fatherless, and the widow who are within your towns. ¹⁵For seven days you shall keep the feast to the LORD your God at the place which the LORD will choose; 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"Three times a year all your males shall appear before the LORD your God at the place which he will choose: at the feast of unleavened bread, at the feast of weeks, and at the feast of booths. They shall not appear before the LORD empty-handed; ¹⁷every man shall give as he is able, according to the blessing of the LORD your God which he has given you.