'Eternal' in the Bible

And if your hand is a cause of trouble to you, let it be cut off; it is better for you to go into life with one hand than to have two hands and go into hell, into the eternal fire.

And while he was going out into the way, a man came running to him, and went down on his knees, saying, Good Master, what have I to do so that I may have eternal life?

Who will not get a hundred times as much now in this time, houses, and brothers, and sisters, and mothers, and children, and land--though with great troubles; and, in the world to come, eternal life.