Leviticus 23:38-40

New Catholic Bible

³⁸ in addition to the Sabbaths of the Lord, your gifts, your vows, and all of the free-will offerings that you give to the Lord. ³⁹ On the fifteenth day of the seventh month, when you have gathered in the fruit of the land, you shall celebrate a feast to the Lord for seven days. On the first day there will be a Sabbath rest, and on the eighth day there will be a Sabbath rest. ⁴⁰ On the first day you shall gather for yourselves the shoots of the healthy trees, fronds from the palm trees, branches from the leafy trees, and willows from the brook, and you shall rejoice before the Lord, your God, for seven days.