Jehovah’s Witnesses are given advance notice of that in this prophecy of Revelation 17:13, 14:

¹⁴ “These [political elements represented in the United Nations] have one thought, and so they give their power and authority to the wild beast. These will battle with the Lamb, but, because he is Lord of lords and King of kings, the Lamb will conquer them. Also, those called and chosen and faithful with him will do so.”

15, 16. (a) That final clash over world domination means, in effect, what? (b) What preview does the apostle John give us of this event, with what outcome?

¹⁵ This military engagement means the “war of the great day of God the Almighty” at the world situation called Har–Magedon. (Rev. 16:13-16) Under Jehovah’s protection his witnesses on earth will witness the “war” as described in Revelation 19:11-21. In a preview of this final clash over the issues of world domination, the Christian apostle John describes the outcome of the war, writing:

¹⁶ “I saw the wild beast and the kings of the earth and their armies gathered together to wage the war with the one seated on the horse [Jehovah’s field marshal, Jesus Christ] and with his army [of heavenly angels]. And the wild beast was caught, and along with it the false prophet [the Anglo-American World Power] that performed in front of it the signs with which he misled those who received the mark of the wild beast and those who render worship to its image [the United Nations]. While still alive, they both were hurled into the fiery lake that burns with sulphur. But the rest were killed off with the long sword of the one seated on the horse, which sword proceeded out of his mouth. And all the birds [mentioned in Re 19 verses 17, 18] were filled from the fleshy parts of them.”

17. What does this calamity upon the atheistic political elements terminate, and then what takes place toward unseen elements?

¹⁷ That destruction of all the atheistic elements of this Devil-controlled system of things will terminate the “great tribulation” mentioned in Revelation 7:14.

In the coming “war of the great day of God the Almighty” at Har–Magedon, Jesus Christ will gain the victory over all the earthly enemies of Jehovah and of his people, killing off those enemies of God’s kingdom. Jesus Christ will not do this executional work at the expense of every member of the remnant of his spirit-begotten, anointed followers yet on earth, for in that case there would be no complete victory for the side of God’s kingdom. Furthermore, what about the “great crowd” of faithful associates of that anointed remnant? Revelation 7:9-15 plainly states that this “great crowd” will survive the “great tribulation” climaxing at Har–Magedon.