18, 19. It was the due time to take up what work again, and why?

¹⁸ The nations of this world had definitely entered their “time of the end”​—with the close of the Gentile Times in 1914. (Daniel 12:4) The stage of world affairs now certainly called for Jehovah’s appointed work to be taken up again, and that was that which his Son Jesus Christ had foretold:

¹⁹ “This good news of the kingdom will be preached in all the inhabited earth for a witness to all the nations; and then the end will come.”​—Matthew 24:14; Mark 13:10.

20. (a) In what way did that tremendous worldwide work need to be done? (b) What two organizations are there to take into account?

²⁰ Such a tremendous work of worldwide scope required to be done in a most organized way, with a fully united organization, under the supreme headship of the theocratic Ruler, Jehovah God, who was in his true spiritual temple.

The assignment to preach the Kingdom news on earth Jehovah of armies would give only to his visible earthly organization.

23. Besides Kingdom preaching, what other work has there been for Jehovah’s visible organization to do?

²³ In this “time of the end” for this present system of things the preaching of “this good news of the kingdom” for a witness to all the nations is not the only work of God’s visible earthly organization after the close of World War I. There has been a harvesting work in progress, in a spiritual sense. Jesus Christ foretold this.