God sees unregenerate people as already dead in a sense because they are cut from the Source of Life, they are dead in Adam... as opposed to alive in Christ. The battle of armageddon is a military activity where Gods saves what is left of Israel from the anti-christ and the hundreds on millions in his forces that come against them. By then about two thirds of the earths population will be wiped out by the wars and the treachery of the anti-christ.
Instead of coming to kill all the "bad people" like the WT teaches, Jesus once again comes as savior of the world, but this time he comes in all his military and royal glory.
1Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee. 2For I will gather all nations against Jerusalem to battle; and the city shall be taken, and the houses rifled, and the women ravished; and half of the city shall go forth into captivity, and the residue of the people shall not be cut off from the city. 3Then shall the LORD go forth, and fight against those nations, as when he fought in the day of battle. 4And his feet shall stand in that day upon the mount of Olives ..... and the LORD my God shall come, and all the saints with thee. (those previously raptured)
6And it shall come to pass in that day, that the light shall not be clear, nor dark: 7But it shall be one day which shall be known to the LORD, not day, nor night: but it shall come to pass, that at evening time it shall be light.
8And it shall be in that day, that living waters shall go out from Jerusalem; half of them toward the former sea, and half of them toward the hinder sea: in summer and in winter shall it be.
9And the LORD shall be king over all the earth: in that day shall there be one LORD, and his name one.
..... and there shall be no more utter destruction; but Jerusalem shall be safely inhabited.
16And it shall come to pass, that every one that is left of all the nations which came against Jerusalem shall even go up from year to year to worship the King, the LORD of hosts, and to keep the feast of tabernacles
There is a misery coming to this planet the likes of which has never been seen during the reign of the "man of lawlessness". Jesus will put a stop to the globalists plans of world domination and will bring life, goodness, fairness and blessing to men of goodwill. After the antichrist gets done with this planet, no one will want fallible man to run the show again.
Christ will bring healing to the nations, not death.
Heaven is the destination of church age and OT saints..... for a time. Earth is the future site of Christs' thousand-year reign. The WT gets all this befuddled up.