The Two Witnesses

The two witnesses of Revelation 11 will be testifying for Christ against Antichrist for the duration of the 2 1/2 months that Satan is playing Christ. They will have powers beyond what man possesses. The 1,260 days referenced in Revelation 11:3 is the 3 1/2 years that then got shortened to 2 1/2 months (3 1/2 years was the latter half of the 7 years in Daniel). They will be slain for their testimony at the end of the 6th Trump as outlined in Revelation 11, and they will lay dead for 3 1/2 days before resurrecting bringing in the 7th Trump and the return of Christ. The 3 1/2 days and resurrection following that time mirrors Christ's death on the Cross and His time dead in the flesh before resurrecting.

So let's theorize for a moment: There were three people from the Old Testament who transfigured (did not die in the flesh, but were "taken" by God). They were Enoch, Elijah, and Moses. Of those three, two appeared with Christ on the Mount of Transfiguration, and they were Moses and Elijah Matthew 17:3. It is conceivable that Moses (representing the Law) and Elijah (representing the Prophets (prophecy)) could be those two witnesses on earth during the 6th Trump with supernatural powers bestowed on them by God to testify His Truth against Satan.

Malachi 4:5 Behold, I will send you Elijah the prophet before the coming of the great and dreadful day of the Lord: