Nehemiah 8:14-17

14They found written in the Torah that Adonai had commanded through Moses that Bnei-Yisrael should dwell in sukkot during the feast of the seventh month.

15So that they should proclaim and spread this message in all their towns and in Jerusalem saying, “Go out to the hill country and bring olive branches and wild olive branches, myrtle branches, palm branches and branches of other leafy trees to make sukkot, just as it is written.”

16So the people went out and brought branches, and made sukkot for themselves, each on their own roof, in their courtyards, in the courtyards of the House of God, in the plaza before the Water Gate and in the plaza of the Ephraim Gate.

17The entire assembly who had returned from the captivity made sukkot and dwelt in the sukkot. Since the days of Joshua the son of Nun until that day Bnei-Yisrael had not done so—and the joy was very great.