Deuteronomy 16:13-17

¹³You shall keep the feast of tents seven days, after that you have gathered in from your threshing floor and from your winepress: ¹⁴and you shall rejoice in your feast, you, and your son, and your daughter, and your man-servant, and your maid-servant, and the Levite, and the sojourner, and the fatherless, and the widow, who are within your gates. ¹⁵Seven days shall you keep a feast to Yahweh your God in the place which Yahweh shall choose; because Yahweh your God will bless you in all your increase, and in all the work of your hands, and you shall be altogether joyful. ¹⁶Three times in a year shall all your males appear before Yahweh your God in the place which he shall choose: in the feast of unleavened bread, and in the feast of weeks, and in the feast of tents; and they shall not appear before Yahweh empty: ¹⁷every man shall give as he is able, according to the blessing of Yahweh your God which he has given you.