In Zechariah 14:18-19 Spiritual Egypt ( the Physical organized churches) does not keep the feast of Tabernacles

The city of Jerusalem identified as on earth (Christ crucified) is the city where the believer normally would be found and where the gospel would be physically located. This in our day could only be the physical organized churches. However, during the Final Tribulation in our Day, we see the city where the believer would normally occupy (the local physical organized churches) becomes spiritual Egypt.

Jerusalem: called also Salem, Ariel, Jebus, the “city of God,” the holy city"

Revelation 11:8 And their dead bodies shall lie in the street of the great city, which spiritually is called Sodom and Egypt, where also our Lord was crucified.

In Zechariah 14:18-19, we see that spiritual Egypt (represented by the physical organized churches) has no rain. The latter rains would be needed to produce the Final Harvest (Feast of Tabernacle or Ingathering). Thus, without the latter rain the physical organized church has no longer the ability to present the saving gospel.

Zechariah 14:18 And if the family of Egypt go not up, and come not, that have no rain; there shall be the plague, wherewith the LORD will smite the heathen that come not up to keep the feast of tabernacles.

Zechariah 14:19 This shall be the punishment of Egypt, and the punishment of all nations that come not up to keep the feast of tabernacles.