Revelation 2:8-12

And unto the angel of the church in Smyrna write; These things saith the first and the last, which was dead, and is alive; I know thy works, and tribulation, and poverty, (but thou art rich) and I know the blasphemy of them which say they are Jews, and are not, but are the synagogue of Satan. Fear none of those things which thou shalt suffer: behold, the devil shall cast some of you into prison, that ye may be tried; and ye shall have tribulation ten days: be thou faithful unto death, and I will give thee a crown of life. He that hath an ear, let him hear what the Spirit saith unto the churches; He that overcometh shall not be hurt of the second death. And to the angel of the church in Pergamos write; These things saith he which hath the sharp sword with two edges