Let Your Name Be Sanctified is not in WT Library. (wonder why) In any case, at Gilead, it is officially a question on all the tests who Elijah (Rutherford) and Elisha (Knorr) prophetically picture. These types and anti types were all from Fred Franz, who according to Ray Franz, held that the position of Pres of the WTBTS was the main position that YHWH was using. (sorry, I can't type that name out too much these days, YHWH will have to do) As you can see from the WT quote below, it is still an official teaching, and I don't believe it has been restated in a WT since the 1960's.
Again, realize that the point of all this is to reinforce the authority of the GB. It is pretty convuluted....
Ask me another time what the 10 plauges symbolize prophetically.
*** w658/15pp.494-495pars.11-12TurningtoJehovah***
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Do you recall Elisha’s first miracle? It was the same as Elijah’s last one, using the official garment that had fallen from Elijah for the same purpose, enabling Elisha to recross the riverbed dryshod. Only now he was alone, except that Jehovah was backing him up. In between those two miracles another notable one occurred, when Elijah ascended to the heavens in a windstorm after being separated from Elisha by a fiery war chariot and horses. That prophetically pictured the end of the work by the Elijah class and the continuation of the same work, only intensified, by the Elisha class. The historical events occurring early in the war year of 1942 marked the fulfillment of this changeover. Just prior to that time, in the midst of World War II, it seemed as if the witness work might be coming to its end. The outlook was very uncertain. On January 8, 1942, the president of the Watch Tower Society, J. F. Rutherford, died. Did the work stop?—2 Ki. 2:11-14.
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To the contrary, the Elisha class, made up of the remaining members of the anointed remnant, immediately carried on with the same work of dividing the symbolic waters, even as Elisha did in a literal way. The same Watch Tower Society was used as a publishing agency, but with a new elected president. In the same issue of TheWatchtower that announced President Rutherford’s death, there appeared the leading article entitled "Final Gathering," based on Jeremiah 16:16, telling of an intensive fishing and hunting for those who might yet be recovered. In the late summer of 1942 a three-day convention was held by Jehovah’s witnesses at Cleveland, Ohio, with repeat programs in many cities of other countries. The main theme was based on Isaiah, chapters 59 and 60, bidding God’s people to "Arise . . . shed forth light," resulting in a great flock of peoples coming to the light, "flying just like a cloud." (Isa. 60:1-3, 8; Rev. 7:9) No doubt about it! The Elisha class recognized their commission and were losing no time!