This teaching that the "other sheep" are earth bound believers who will never see heaven was fabricated by Mr. Rutherford in the 1930's. ( John 10:16 )
What does your bible teach you about who the "other sheep" of Jesus fold really are? Simply read the following bible passages and see who the Apostle Paul says are the "other sheep".
Romans 11:25-31 A Mystery Revealed
Romans 15:9-12 Quotes from old testament not fully understood until the apostles (Eph 3:6)
Eph 2:11-19 Wall removed/ made one Eph 3:2-12 Revealed mystery
Who are the other sheep Jesus was speaking of? Gentiles, non-Jewish Christian believers.
But wait, if Russell was wrong about who the other sheep really are, could he and the Watchtower be wrong about who should partake? And how about how often they should partake?