Why do we believe that the rapture will happen before the tribulation? There are a number of signposts in Scripture that point us in the direction of which I will write about in the coming weeks. I will start with premillennialism.
Premillennialism is the belief in the thousand year reign of Jesus before the eternal state (see Rev. 20:1-10). Those who hold to this position believe in a literal seven year tribulation after which Jesus returns to earth to setup His kingdom and rule over the nations from Jerusalem.