Here's the text of Rev 2:10 below. Like all scripture, which I state or reiterate frequently, this scripture was NOT written to us but directly to the church in Smyrna and has a prophetic message for them. Although the message infers dire trouble in store for them which could include death, it still has application to us today. Will we be faced with what Jesus was indicating they were soon to face? Maybe, maybe not. If WE were to be persecuted unto death, would we be able to be faithful up to our very death and yet remain faithful and not renounce the Lord? Something to think long and hard about. That's the message in context and that's the way it could possibly apply to us as to them, truly unto death. But further application to us is, that we do our very best to remain faithful, not backsliding, not renouncing the Lord or denying him in any way under peer pressure or pressure from the government, etc. Remain faithful, attend services regularly, win souls, convert people, correct errant people, etc. That's remaining faithful unto death, and hope and pray along the way we are not challenged as those in biblical times were.
10Fear 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.