Does Hell Last Forever?

Then He will also say to those on His left, “Depart from Me, accursed ones, into the eternal fire which has been repared for the devil and his angels…And these will go away into eternal punishment, but the righteous into eternal life. (Matthew 25:41; 46)

To the lost who will be gathered on His left the King will say, “Depart from Me, accursed ones, into the eternal fire which has been prepared for the devil and his angels.” Joining the unredeemable devil and his angels in the eternal fire of hell will be those human beings who refused to believe.

Jesus is speaking of eternal separation from God and from His goodness, righteousness, truth, joy, peace, and every other good thing. He is speaking of eternal association with the devil and his angels in the place of torment God prepared for them. He is speaking of eternal isolation, where there will be no fellowship, no consolation, and no encouragement. He is speaking of eternal duration and of eternal affliction, from which there will be no relief or respite.

Jesus uses the same word (aionios, eternal) to describe salvation and condemnation. If believers will be in heaven with God forever, the lost will be in hell with the devil forever...

http://www.macarthurcommentaries.com