1 THESSALONIANS 4 VERS 15
For this we declare to you by a word from the Lord, that we, who are alive, who are left until the coming of the Lord, will not precede those who have fallen asleep.
When is The Lord coming back?
Matthew 24:29: "Immediately after the tribulation of those days the sun will be darkened, and the moon will not give its light, and the stars will fall from heaven, and the powers of the heavens will be shaken.
Matthew 24:30: Then will appear in heaven the sign of the Son of Man, and then all the tribes of the earth will mourn, and they will see the Son of Man coming on the clouds of heaven with power and great glory.
Matthew 24:31: And He will send out his angels with a loud trumpet call, and they will gather His elect from the four winds, from one end of heaven to the other.
The Lord will return at the very end of when the earth will be destroyed by fire. 2 Peter 3:10. This moment will overtake everybody!
means that Paul himself shared in this expectancy. It wasn’t because Paul had an erroneous promise of the return of Jesus in his lifetime. More feasible is the solution that sees Paul setting an example of expectancy for the church of all ages. Proper Christian anticipation includes the imminent return of Christ:
MATTHEW 24:44 JESUS SAYS:
Therefore you also must be ready, for the Son of Man is coming at an hour you do not expect.