There is no reason for it. Yet, many people are suckered in by it. Time and again, the falsehood of the Jehovah’s Witnesses’ claim to interpret prophecy so as to tell when Jesus would return has proven that to be clear enough. They staked everything on their latest prophecy that this would occur in 1975—and failed!
It was a do-or-die moment for them since after that year the last of their so-called 144,000 heavenly class witnesses would take his final communion and die. That would be the end, and the prophecy would be fulfilled—only it wasn’t!
Listen to what the very passage from which they take their name has to say:
You are my witnesses,’ declares the lord . . . Before Me there was no God formed, and there will be none after Me. I, even I, am the Lord; and there is no savior besides Me.
Did you get it? The JWs claim that God created Jesus as “a god.” Yet, the 10th verse stoutly refutes the idea. The 11th verse likewise creates a problem for them since Luke 2:11 calls the Lord Jesus a “Savior.”
Now, of course, if they want to admit that there was no God or Savior other than God the Father—as Isaiah teaches—and settle for the logical conclusion that, therefore, Jesus is that God and Savior—one with the Father and the Spirit—great! But will they? Doesn’t look like it. They go on failing, holding to exegesis that is flawed, and so on. Pray for them, and when they come to the door, mention these facts to them. Who knows, you may be introducing them to our Great God and Savior for the first time!