'Even' in the Bible

I know where thou dwellest, where the throne of Satan is; and thou holdest fast my name, and hast not denied my faith, even in the days in which Antipas my faithful witness was, who was slain among you, where Satan dwells.

and they have overcome him by reason of the blood of the Lamb, and by reason of the word of their testimony, and have not loved their life even unto death.

And it works great signs, that it should cause even fire to come down from heaven to the earth before men.

Recompense her even as she has recompensed; and double to her double, according to her works. In the cup which she has mixed, mix to her double.

and death and hades were cast into the lake of fire. This is the second death, even the lake of fire.