This is now shown to be a post trib passage. 1Th 4:17 Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord. There is something in the verse to show timing. perileipo Strongs 4035 1) to leave over 2) to remain over, to survive This word means to leave over or remain over with survival as a key element. Its used in greek writings to show survivors of events. In 1 Thessalonians 4 it shows that those members of the church who survived the tribulation will be caught up to meet Jesus as he descends. If not the tribulation what did they survive?