Bible Verses About Feast of Tabernacles: Penalty for not observing

It will happen that everyone who is left of all the nations that came against Jerusalem will go up from year to year to worship the King, the LORD of Hosts, and to keep the feast of booths.

It will be, that whoever of all the families of the earth doesn’t go up to Jerusalem to worship the King, the LORD of Hosts, on them there will be no rain.

If the family of Egypt doesn’t go up, and doesn’t come, neither will it rain on them. This will be the plague with which the LORD will strike the nations that don’t go up to keep the feast of booths.

This will be the punishment of Egypt, and the punishment of all the nations that don’t go up to keep the feast of booths.