To see whether this belief (Rapture) that faithful Christians will be bodily caught up from the earth is the accurate interpretation of this verse, an examination of the context of the surrounding verses as well as the context of the entire Bible's teachings would be recommended.
When the apostle Paul said that Christians would be "caught up" to be with the Lord, evidently some members of the Christian congregation in Thessalonica had died. Paul encouraged the survivors to comfort one another with the resurrection hope. He reminded them that Jesus was resurrected after his death; so, too, at the coming of the Lord, those faithful Christians among them who had died would be raised to be with Christ:
1 Thess. 4:13-18, RS: "We would not have you ignorant, brethren, concerning those who are asleep ["those who sleep in death," NE; "those who have died," TEV, JB], that you may not grieve as others do who have no hope. For since we believe that Jesus died and rose again, even so, through Jesus, God will bring with him those who have fallen asleep. For this we declare to you by the word of the Lord, that we who are alive, who are left until the coming of the Lord, shall not precede those who have fallen asleep. For the Lord himself will descend from heaven with a cry of command, with the archangel's call, and with the sound of the trumpet of God. And the dead in Christ will rise first; then we who are alive, who are left, shall be caught up together with them in the clouds to meet the Lord in the air; and so we shall always be with the Lord. Therefore comfort one another with these words."
For more, see:
Search For Bible Truths - ARCHIVE
Search For Bible Truths - Search Guide