Leviticus 23:40-43

CLV(i) 40 You will take for yourselves on the first day fruit of goodly trees, fronds of palms and boughs of leafy trees, and oleanders of the watercourse, and you will rejoice before Yahweh your Elohim for seven days. 41 You will celebrate it as a celebration to Yahweh for seven days in the year. It shall be an eonian statute throughout your generations. In the seventh month shall you celebrate it. 42 In booths shall you dwell seven days, that is, every native in Israel; they shall dwell in booth. 43 that your generations may know that in booths I made the sons of Israel dwell when I brought them forth from the land of Egypt:I, Yahweh, am your Elohim.