There are seven human dispensations.
The church age is part of the dispensation of grace, which is the sixth.
The church age will come to an end with the rapture of eligible Christians seven years before the dispensation of grace comes to an end.
After the tribulation of those days, Jesus with raptured saints and holy angels will descend to the earth from heaven.
On alighting on earth, Jesus will destroy the armies of the world assembled at the Valley of Megiddo in Israel and send His angels to select kingdom citizens from among surviving human beings.
To miss the rapture of the church is to miss being part of the Priesthood of Jesus Christ.