Revelation 2:8-10

8To the angel of the church in Smyrna write:

These are the words of the First and the Last, who died and returned to life.

9I know your affliction and your poverty—though you are rich! And I am aware of the slander of those who falsely claim to be Jews, but are in fact a synagogue of Satan.

10Do not fear what you are about to suffer. Behold, the devil is about to throw some of you into prison to test you, and you will suffer tribulation for ten days. Be faithful even unto death, and I will give you the crown of life.