By Ori~ (Own work) [Attribution], via Wikimedia Commons
With regards to the Festival of Sukkot, the Torah tells us that, “And the Lord spoke to Moses saying: Speak to the Children of Israel and tell them, the 15th day of this seventh month shall be the Festival of Sukkot – seven days for the Lord… for seven days, you shall present a burnt offering to the Lord…
On the first day, you shall take for yourself a fruit of the citron tree (etrog), a palm frond (lulav), myrtle branches (hadas) and willows (aravah). You shall rejoice before the Lord your God for seven days. During these seven days each year, you shall celebrate to God. It is an eternal law for all generations that you celebrate in the seventh month.