'Eternal' in the Bible

"So if your hand or your foot causes you to sin, cut it off and throw it away. It is better for you to enter life injured or crippled than to have two hands or two feet and be thrown into eternal fire.

Just then a man came up to Jesus. "Teacher," he asked, "what good deed should I do to have eternal life?"

In fact, everyone who has left his homes, brothers, sisters, father, mother, children, or fields because of my name will receive a hundred times as much and will inherit eternal life.

"Then he will say to those on his left, "Get away from me, you who are accursed, into the eternal fire that has been prepared for the Devil and his angels!

These people will go away into eternal punishment, but the righteous will go into eternal life."