Hi, Matt!
 
Elijah never saw death either, Matt, which is why I personally believe the two witnesses will be Enoch & Elijah.  The Bible tells us that it is for man to die ONCE, and then the judgment.  Once a man/woman dies, their bodies remain in the grave until the resurrection/Rapture.
 
Moses physically DIED, as did all other men throughout history, with the exception of Enoch and Elijah.  The Bible also tells us unequivocably that Moses DIED and was buried; in fact, there was a spiritual struggle for the body of Moses, with Satan trying desperately to get hold of the body, and of course, losing to YHWH.
 
Halfway through the Trib, the Two Witnesses die physically, and are Resurrected after 3 days of lying in the streets.
 
Just some food for thought, brother!
YSIC!
Peggy
www.his-forever.com