This shall be the punishment of Egypt and the punishment of all the nations that do not come up to keep the Feast of Tabernacles.
Zechariah 14:19
Surrounding context
14:18 If the family of Egypt will not come up and enter in, they shall have no rain; they shall receive the plague with which the LORD strikes the nations who do not come up to keep the Feast of Tabernacles.
14:19 This shall be the punishment of Egypt and the punishment of all the nations that do not come up to keep the Feast of Tabernacles.
14:20 In that day "HOLINESS TO THE LORD" shall be engraved on the bells of the horses. The pots in the LORD's house shall be like the bowls before the altar.