Leviticus 23:40-41

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 the LORD your God seven days. {boughs of goodly trees: Heb. fruit of, etc} And ye shall keep it a feast unto the LORD seven days in the year. {It shall be} a statute for ever in your generations: ye shall celebrate it in the seventh month.