'Love' in the Bible

But I have this against you, that you left your first love.

"I know your works, your love, faith, service, patient endurance, and that your last works are more than the first.

As many as I love, I reprove and chasten. Be zealous therefore, and repent.

They overcame him because of the Lamb's blood, and because of the word of their testimony. They didn't love their life, even to death.