[Deuteronomy 16:13-17]

13 Celebrate the Feast of Tabernacles for seven days after you have gathered the produce of your threshing floor and your winepress.
14 Be joyful at your Feast--you, your sons and daughters, your menservants and maidservants, and the Levites, the aliens, the fatherless and the widows who live in your towns.
15 For seven days celebrate the Feast to the LORD your God at the place the LORD will choose. For the LORD your God will bless you in all your harvest and in all the work of your hands, and your joy will be complete.
16 Three times a year all your men must appear before the LORD your God at the place he will choose: at the Feast of Unleavened Bread, the Feast of Weeks and the Feast of Tabernacles. No man should appear before the LORD empty-handed:
17 Each of you must bring a gift in proportion to the way the LORD your God has blessed you.