'Eternal' in the Bible

And if your hand or your foot is a cause of trouble, let it be cut off and put it away from you: it is better for you to go into life with the loss of a hand or a foot than, having two hands or two feet, to go into the eternal fire.

And one came to him and said, Master, what good thing have I to do, so that I may have eternal life?

And everyone who has given up houses, or brothers, or sisters, or father, or mother, or child, or land, for my name, will be given a hundred times as much, and have eternal life.

Then will he say to those on the left, Go from me, you cursed ones, into the eternal fire which is ready for the Evil One and his angels:

And these will go away into eternal punishment; but the upright into eternal life.