Revelation 2:10-11

10Fear nothing [of] what thou art about to suffer. Behold, the devil is about to cast 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 to thee the crown of life.

11He that has an ear, let him hear what the Spirit says to the assemblies. He that overcomes shall in no wise be injured of the second death.