Who will be left standing?

You are most likely familiar with the phrase: the last man standing. Or the last person standing. The idea is that everyone else has been disqualified or eliminated but there is one person still standing. Its a statement of victory. Revelation 7 is about standing. The people of God are pictured as standing before the throne of God at the end of history. We live in a world filled with dangers that threaten our faith. But God seals his people and preserves them through the trials of life that they might stand in the end. Who are those that are left standing and how can this chapter help us be among those standing in the end?