I thought it was to get the remnant out
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Remember that the WTS did not teach that all non-jws would be destroyed then just the religious, commercial, political systems. So yes it was to find the anointed but not to the eternal detriment of the rest of humankind. When the "end" did not come in 1914 and Russell died in 1916, it was necessary to turn that concept around to the end still being future and the need to find the "great crowd" before the end in 1925, 1940's, 1975, etc.