There are a few magazines you should collect for this teaching:
w50 2/1 pp. 35-37 pars. 1-12 What Do You Do
with Your Time?
"The appointed time has grown very short."
(1 Cor. 7:29, An Amer. Trans.) This sobering pronouncement from the
lips of one of the world's foremost authorities on Christianity should be
thoughtfully considered by men living in this twentieth century. What time, then, grown so short could possibly
affect this generation?" Paul
looked confidently forward to the end of the present system of things with its
confusion, corruption and violence; and his confidence was based on Holy
Scripture and the words of his Master, Christ Jesus. Do you know that the very
signs Jesus foretold and his apostles looked for have seen fulfillment on this
present generation?
"Perhaps several generations will yet come and
go before God's wrath is expressed against wickedness and its final end brought
about." Such a conclusion should be hastily dismissed from mind. (Matt.
24:34) It is the generation you are living in that is primarily
concerned.
As it comes on apace, let us not be found among the
scoffers who push the end into the remote future saying, "Perhaps
sometime, but not in our day!" Such a group has lived upon this earth in
the past.
Awake!
1961 Feb 22 p. 7
That now-operating kingdom in heaven will, within the twentieth century, cleanse the entire
earth of wickedness... Can you not see that the twentieth century is the century indicated by the prophetic language of Matthew
24, Mark 13, Luke 21, and 2 Timothy 3?
Awake!
1961 Feb 22 p. 8
...is it not only logical that whatever else is recorded in these above-mentioned Bible chapters
must also come upon the twentieth
century? ... Revelation 16:16 calls it the "war of the great day of God the Almighty," Armageddon. This war will come in the twentieth century. ...Now is the time to heed Bible prophecy
concerning the twentieth century and live forever in the sunshine of
God's new world.
Awake!
1962 July 22 p. 32
But how many realize that it contains information of special interest to those of us who
live in this climactic twentieth century?
The
Nations Shall Know That I Am Jehovah p. 216
"Shortly, within our twentieth
century, the "battle in the day of Jehovah" will begin against
the modern antitype of Jerusalem, Christendom."
Watchtower 1984 March 1 pp.18-19
"Some of that "generation" could survive until the end of the century. But there are
many indications that "the end" is much closer than that!"
Let
Your Kingdom Come 1981 p.11
...now in our 20th century, we have
come to the time for harvest — "a conclusion of a system of
things, and the reapers are angels"!
Revelation Climax (1988 - removed from the
1996 revision) chap. 34 p. 246 par. 1
The John class today also wonders with great
wonderment as events unfold in fulfillment of the prophetic vision. If people
of the world could see it, they would exclaim, 'Incredible!' and the world's
rulers would echo, 'Unthinkable!' But the vision becomes a startling 20th-century reality.
Watchtower 1989 January 1 p.12 (loose copy magazine):
"He was laying a
foundation for a work that would be completed
in our 20th century."