Leviticus 23:42

42. Ye shall dwell in booths This command excludes a cloth or skin covering, according to the decisions of Jewish expounders, and every thing pertaining to the animal and mineral kingdoms. Every thing withered, or faded, or of ill savour, or unclean, was also prohibited. The booths must be fresh and fragrant, in correspondence with the gladness of their tenants.

The first part of October, when this feast was celebrated, the weather in Palestine is neither hot nor cold, nor subject to storms, but admirably adapted to outdoor life.

All… Israelites… shall dwell The word “shall” is here altogether too strong a translation of the Hebrew future, which is often rendered by may or can. “To insist on the absolute universality is to become a bond-slave to the letter.”