The Feast of Tabernacles – Rejoice

And ye shall take you on the first day the boughs of goodly trees, branches of palm trees, and the boughs of thick trees, and willows of the brook; and ye shall rejoice before YHWH your Eloah seven days. And ye shall keep it a feast unto YHWH seven days in the year. It shall be a statute for ever in your generations: ye shall celebrate it in the seventh month. (Lev 23:40-41 KJV)

Thou shalt observe the feast of tabernacles seven days, after that thou hast gathered in thy corn and thy wine: And thou shalt rejoice in thy feast, thou, and thy son, and thy daughter, and thy manservant, and thy maidservant, and the Levite, the stranger, and the fatherless, and the widow, that are within thy gates.
(Deu 16:13-14 KJV)