The term forever is used 56 times in the King James Bible in connection with things that have already ended. It is like the word “tall,” which means something different in describing men, trees, or mountains. In Jonah 2:6, “forever” means “three days and nights.” In Deuteronomy 23:3, it means 10 generations. In the case of mankind, it means “as long as he lives” or “until death.” (See 1 Samuel 1:22, 28; Exodus 21:6; Psalm 48:14.) So the wicked will burn in the fire as long as they live, or until death. This fiery punishment for sin will vary according to the degree of sins for each individual, but after the punishment, the fire will go out. The unbiblical teaching of eternal torment has done more to drive people to atheism than any other invention of the devil. It is slander upon the loving character of a gracious heavenly Father and has done untold harm to the Christian cause.
KJV Dictionary Definition: etern
etern
ETERN', a. Eternal; perpetual; endless. Not used.
eternal
ETER'NAL, a. L. oeternus, composed of oevum and ternus, oeviternus, Varro. The origin of the last component part of the word is not obvious. It occurs in diuturnus, and seems to denote continuance.
1. Without beginning or end of existence.
The eternal God is thy refuge. Deut.33.
2. Without beginning of existence.
To know whether there is any real being, whose duration has been eternal.
3. Without end of existence or duration; everlasting; endless; immortal.
That they may obtain the salvation which is in Christ Jesus with eternal glory. 2 Tim.2.
What shall I do, that I may have eternal life? Matt.19.
Suffering the vengeance of eternal fire. Jude 7.
4. Perpetual; ceaseless; continued without intermission.
And fires eternal in thy temple shine.
5. Unchangeable; existing at all times without change; as eternal truth.
ETER'NAL, n. An appellation of God.
eternalize
ETER'NALIZE, v.t. To make eternal; to give endless duration to. We now use eternize.
eternally
ETER'NALLY, adv. Without beginning or end of duration, or without end only.
1. Unchangeably; invariably; at all times.
That which is morally good must be eternally and unchangeably so.
2. Perpetually; without intermission; at all times.
Where western gales eternally reside.
eternity
ETER'NITY, n. L. oeternitas. Duration or continuance without beginning or end.
By repeating the idea of any length of duration, with the endless addition of number, we come by the idea of eternity.
The high and lofty one who inhabiteth eternity. Is.57.
We speak of eternal duration preceding the present time. God has existed from eternity. We also speak of endless or everlasting duration in future, and dating from present time or the present state of things. Some men doubt the eternity of future punishment, though they have less difficulty in admitting the eternity of future rewards.
eternize
ETER'NIZE, v.t. Low L. oeterno.
1. To make endless.
2. To continue the existence or duration of indefinitely; to perpetuate; as, to eternize woe.
So we say, to eternize fame or glory.
3. To make forever famous; to immortalize; as, to eternize a name; to eternize exploits.
eternized
ETER'NIZED, pp. Made endless; immortalized.
eternizing
ETER'NIZING, ppr. Giving endless duration to; immortalizing.
Definitions from Webster's American Dictionary of the English Language, 1828.