Moses is dead and buried.
Moses the servant of the LORD died there in the
land of Moab, according to the word of the LORD.
 And he ( God ) buried him ( Moses ) in a valley in the land of Moab, over against Beth-peor: but no man knoweth of his sepulchre unto this day.
This scripture below does not say Moses is not dead. It does not say the body is alive.
Jude.1[ 9] Yet Michael the archangel, when contending with the devil he disputed about the body of Moses, durst not bring against him a railing accusation, but said, The Lord rebuke thee.
Many church doctrines say Enoch and Elijah are the 2 witnesses. Some say Moses and Elijah are. No one knows the answer to this.
These scriptures below do not say they are the 2 witnesses.
Matt.17[ 3] And, behold, there appeared unto them Moses and Elias talking with him.
Luke.9[ 30] And, behold, there talked with him two men, which were Moses and Elias: