Nehemiah 8:15-16

15They discovered that they must send a message to everyone in Jerusalem and all Judah's cities. They must tell people, ‘Go into the hill country. Bring back branches from olive trees, wild olive trees, myrtle trees, palm trees and other trees with lots of leaves. Use these branches to build huts to live in. That is what God's Law teaches.’

16So the people went out and they brought back branches. They built huts on their roofs and in the yards of their houses. They also built them in the yards of the temple and in the open places near the Water Gate and the Gate of Ephraim.