Question (A composite of many, many questions—too many to deal with singly—concerning the Rapture and the "last trump."): The sounding of the "last trump" very clearly calls the dead from their graves at the resurrection (1 Corinthians:15:52). Since the Rapture and the resurrection of "those who sleep in Jesus" (1 Thessalonians:4:13-18) occur simultaneously, the "last trump" must signal the moment of the Rapture and would seemingly be heard by all the redeemed at that moment. Wouldn't the seventh trumpet (Revelation:11:15) be the "last trump," and wouldn't that tell us the time of the Rapture—i.e., the mid-point of the Great Tribulation?
Response: I can't say that the seventh trumpet, sounded by the seventh angel (Rv 11:15), occurs at mid-trib, much less that this marks the resurrection and Rapture of the saints. First Thessalonians 4:16 refers to the "trump of God" but does not identify it as the trumpet sounded by the seventh angel. A number of remarkable events are described as occurring when this seventh trumpet is sounded (Rv 11:15-19), but the resurrection and Rapture are not mentioned, which seems odd if they do occur at this time—nor do they seem to fit this timing.
The first three chapters of Revelation are about events happening to the church on earth. Then suddenly a "door is opened in heaven" (Rv 4:1) and John is commanded, "Come up hither...." That is the last we hear of the church on earth. From that time forward, the scene shifts to heaven except for the Second Coming, with which the Great Tribulation and Revelation both begin: "Behold he cometh with clouds; and every eye shall see him, and they also which pierced him..." (Rv 1:7).
There are numerous reasons for a pre-trib Rapture. Check the TBC reprints for more information on this subject.