And they found written in the Law, which the LORD had commanded through Moses, that the Israelites were to dwell in booths during the feast of the seventh month.

Leviticus 23:34
"Speak to the Israelites and say, 'On the fifteenth day of the seventh month the Feast of Tabernacles to the LORD begins, and it continues for seven days.

Leviticus 23:40
On the first day you are to gather the fruit of majestic trees, the branches of palm trees, and the boughs of leafy trees and of willows of the brook. And you are to rejoice before the LORD your God for seven days.

Ezra 3:4
They also celebrated the Feast of Tabernacles in accordance with what is written, and they offered burnt offerings daily based on the number prescribed for each day.

Nehemiah 8:13
On the second day of the month, the heads of all the families, along with the priests and Levites, gathered around Ezra the scribe to study the words of the Law.

And they found written in the law which the LORD had commanded by Moses, that the children of Israel should dwell in booths in the feast of the seventh month: