Nehemiah 8:13-17

On the second day of the month, the leaders of all the families, the priests, and the Levites met with Ezra the teacher. They gathered to study the words of the Teachings. This is what they found written in the Teachings: The LORD commanded through Moses that the people of Israel were to live in shelters during the feast of the seventh month. The people were supposed to preach this message and spread it through all their towns and in Jerusalem: “Go out into the mountains, and bring back branches from olive and wild olive trees, myrtle trees, palms, and shade trees. Make shelters with them, as it is written.” So the people went out and got tree branches. They built shelters on their roofs, in their courtyards, in the courtyards of the Temple, in the square by the Water Gate, and in the square next to the Gate of Ephraim. The whole group that had come back from captivity built shelters and lived in them. The Israelites had not done this since the time of Joshua son of Nun. And they were very happy.