For this reason it is written, in Revelation 16:13-16, that the combined forces of wickedness, under Satan, and the combined forces of righteousness, under Christ, are marching to Armageddon which will mark the greatest battle and be time of the greatest tribulation the world has ever known.
The Kingdom-The Hope of the World. 1931. p. 9
Satan refuses to vacate; therefore he is gathering his forces to Armageddon and God is gathering his forces for that battle of the great day of God Almighty. (See Revelation 16: 13-16, Light, Book Two, pages 41-57.)
The Kingdom-The Hope of the World. 1931. p. 49
The next great act of the anointed King of Jehovah will be to destroy Satan’s organization in the battle of Armageddon, which is just ahead; therefore the people of the land need to be told over and over again this truth, because f its great importance, that the kingdom of God is now among you. That is the reason men and women are going from house to house daily, and particularly on Sunday, delivering this message to the people and bringing to their attention the Scriptural proof in the form of books explaining the Bible. Never was it so important to preach the good news of the kingdom as just now, and when this is done Armageddon will immediately follow.
The Kingdom-The Hope of the World. 1931. p. 57
All observe that at this very time darkness is in the earth and gross darkness upon the people concerning the Word of God, and the whole world is in the very shadow of death because Armageddon is just ahead. God’s commandment is that his witnesses must now serve notice upon the rulers and the people of the impending destruction of “Christendom”, in particular and of the destruction of Satan’s entire organization, in general, in order that the people who are of good will and honest heart may, if they choose, take their stand on the side of the Lord God and give their allegiance to his kingdom. It is that class or people alone that will escape the worst part of the battle of Armageddon and be brought through.
The Kingdom-The Hope of the World. 1931. p. 59