Deuteronomy 16
13 Ref You shall keep the feast of tents seven days, after that you have gathered in from your threshing floor and from your winepress:
14 Ref and 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 foreigner, and the fatherless, and the widow, who are within your gates.
15 Ref Seven 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.
16 Ref Three 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: