Who is the dragon and what does he do?
The dragon that occurs in Revelation 12 as sign’ (v. 3) and stands for Satan (vs. 7-9). He is cast out of heaven in the middle of the seven-year tribulation period. Then the great tribulation of three-and-a-half years follows during which the dragon persecutes the Jewish remnant (see Q 25), the seed of the woman (Israel), (see vs.13-17). Thereafter, the dragon will be bound and confined to the abyss for 1,000 years, i.e. during the millennium (Rev. 20:1). Finally, he will be cast into the lake of fire (Rev. 20:10).