Is Matthew 24 verses 15 to 31 a proof of post-tribulation rapture?

90% of Christians believe in pre-tribulation rapture. Nevertheless in Matthew 24 verses 15 to 31 we read: *when ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place .......... let them which be in Judea flee into the mountains ......... for then shall be **great tribulation** such as was not since the beginning of the world to this time, no, nor ever shall be .......... immediately **after the tribulation** of those days ......... shall appear the sign of the Son of man in heaven .......... and he shall send his angels .......... and they shall gather together his elect from the four winds, from one end of heaven to the other...........* Is Matthew 24 verses 15 to 31 a proof of post-tribulation rapture because if the rapture happens before **the great tribulation** who will the angels gather *from the four winds from one end of heaven to the other* **after the great tribulation**?