Revelation 2:10
Fear none of those things which you shall suffer: behold, the devil shall cast some of you into prison, that you may be tried; and you shall have tribulation ten days: be you faithful to death, and I will give you a crown of life.
Torrey's Topical Textbook—AKJV

Revelation 6:11
And white robes were given to every one of them; and it was said to them, that they should rest yet for a little season, until their fellow servants also and their brothers, that should be killed as they were, should be fulfilled.
Torrey's Topical Textbook—AKJV