Revelation 2:9-11

I know thy tribulation, and thy poverty (but thou art rich), and the blasphemy of them that say they are Jews, and they are not, but are a synagogue of Satan. Fear not the things which thou art about to suffer: behold, the devil is about to 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 the crown of life. He that hath an ear, let him hear what the Spirit saith to the churches. He that overcometh shall not be hurt of the second death.