Berean Study Bible (BSB) - Zechariah 14:18 >

And if the people of Egypt will not go up and enter in, then the rain will not fall on them; this will be the plague with which the LORD strikes the nations who do not go up to celebrate the Feast of Tabernacles.

Jewish Publication Society of America Version (JPS1917) - Zechariah 14:18 >

And if the family of Egypt go not up, and come not, they shall have no overflow; there shall be the plague, wherewith the LORD will smite the nations that go not up to keep the feast of tabernacles.