... so how is predicting the United Nations in 1942 or 1 in any way prescient ???
Watchtower believes the scarlet-colored wild beast from Revelation is the League of Nations/United Nations. Rev 17:8 describes this beast as existing, then not existing, then existing again. Watchtower interprets this to mean the League of Nations came into existence after WWI, then went out of existence before WWII at some point, then came back as the United Nations after WWII, thus fitting the Revelation description that "the wild beast was, but is not, and yet will be present."
Based
on their understanding of this scripture Watchtower was predicting the
return of the League (or pretending to), which became known as the UN,
thus they were guided by God's Word and His spirit to accurately make
the prediction, or so they claim.
(Rev 17:8): The wild beast that you saw was, but is not, and yet is about to ascend out of the abyss, and it is to go off into destruction. And when they see how the wild beast was, but is not, and yet will be present, those who dwell on the earth will wonder admiringly, but their names have not been written upon the scroll of life from the founding of the world.