It is a creation of man.
That's about as believable as the Scriptural fact of the Rapture being a creation of man.
The Greek word used in the Rapture Scriptures is harpazo and it means that the church is not only caught away by the power of God, (1 Thessalonians 4:14-17) but it will be seized by God and snatched out with a sudden violent force. So the event of the Rapture is not a creation of man, but a promise of almighty God, placed in His Bible by the inspiration of the Holy Spirit.
By the way, the word "Rapture" can be found in the Latin Vulgate. So God has it covered any way you look at it.