Hope Beyond Armageddon
The Left Behind series concentrates on the tribulation upon the people, and yes, the Scriptures do speak of a momentous time of trouble coinciding with the return of Christ and culminating in Armageddon. However, the true purpose of Armageddon is to cleanse the earth of the systems of corruption which have been under the control of Satan and his servants. It is important to understand d that the corrupt ecclesiastical and civil systems need to be destroyed-not the ignorant people misled by these systems. "Every valley [the poor, suffering world of mankind] shall be exalted, and every mountain and hill [kingdoms of this world] shall be made low..." (Isa. 40:4) This is not a time to burn in eternal flames billions of good-heated people because they have not known and accepted Jesus. The conversion of these people-" the remainder of men"- will be after the cleansing work of Armageddon. This leveling destruction will prepare the way for the righteous kingdom of Christ and his Church. Then, under their benevolent reign, "the inhabitants of the world will learn righteousness" without the fetters of selfish and oppressive powers. Isa. 26:9
Of this time, 1 Timothy 2:3-4 states, God "will have all men to be saved and to come unto the [Greek-full discernment of accurate] knowledge of the Truth." Christ’s "ransom for all guarantees that all who died in Adam will be saved from Adamic death. That is, all will be awakened from the sleep of death and given a full opportunity to learn the Truth of God and His loving character.
In the thousand-year kingdom of Christ "the earth shall [gradually] be full of the knowledge of the Lord as the waters cover the sea." (Isa. 11:9) Also Jeremiah 31:34 says of that time, "for they shall all know me from the least of them unto the greatest." Verse 29 shows that, for the majority of mankind, the kingdom will provide the first full, fair opportunity for salvation through the knowledge of Christ. They will no longer die for the inherited sins of their fathers but for their own iniquity (Jeremiah 31:29, 30). Jesus’ ransom sacrifice for "all" guarantees this full and fair opportunity for "all" -praise the Lord! NO ONE will be left behind!
http://www.biblestudents.com/endtimesarchives_spr01.cfm