pralis
I'm no longer a JW and a don't believe in the two-class system anymore. If I did believe in a two-class system, I would hold to the original belief of Charles T. Russell, that the earthly class will not be manifest until after Armageddon, and that the purpose of this Gospel Age is to select the little flock. In other words, the heavenly hope would be the only one now available, but there will be worldly people who will survive Armageddon and be offered the opportunity to live forever on earth at that time. What the WT has done with its understanding of the "great crowd" is to run ahead of God's timetable before a real change of dispensations has occurred. Like I said, I do not really believe in two classes, but if I did this is the view I would hold.
Now about the WT's refusal to allow the "other sheep" to partake, the following are the reasons given:
1. Partakers must be in the covenant for the kingdom. When he instituted the Memorial Supper, Jesus said to his apostles: "However, you are the ones that have stuck with me in my trials; and I make a covenant with you, just as my Father has made a covenant with me, for a kingdom, that you may eat and drink at my table in my kingdom, and sit on thrones to judge the twelve tribes of Israel." (Luke 22:28-30) To the WT, this means that only people who are going to rule with Jesus in the Kingdom may patake of the emblems. (As far as eating and drinking in a spiritual, heavenly kingdom is concerned, we'll leave for the WT to explain.)
2. Partakers must be in the New Covenant. Jesus said that the wine "means my 'blood of the covenant,' which is to be poured out in behalf of many for forgiveness of sins." (Matt. 26:28) Just as the old Law Covenant was made with natural Israel, so the New Covenant is made with spiritual Israel. Other sheep may receive the forgiveness of sins through Jesus' blood, but for them the blood does not seal a covenant between them and God. What are the terms of the New Covenant? This does not seem to be specifically stated anywhere in the Bible, so the WT uses the terms of the Old Covenant to typify the terms of the New. Jehovah told the Israelites that, if they would obey the Law, "you yourselves will become to me a kingdom of priests and a holy nation." (Ex. 19:6) These words are quoted by Peter and applied to anointed Christians. (1 Pet. 2:9) These ones will become the kingdom of priests (or reign as kings and priests), unlike natural Israel which missed its opportunity. (Rev. 5:10) Consequently, as parties of the New Covenant, only they are allowed to partake of the emblems. (How there can be a strict analogy between the Old Covenant and the New - the old being a Law covenant and the New a grace covenant - we'll leave for the WT to explain.)
Now these are the WT's arguments, not mine. This may be contrasted with the Laymens Home Missionary Movement, one of the splinter groups that left the WT after Rutherford became president. This group also has an earthly class, and their anointed ones died off years ago. The earthly members are allowed to partake of the Memorial on the basis that, even though certain aspects of the Memorial do not apply to them, at least they are benefiting from the ransom sacrifice. You may check their website at http://www.biblestandard.com - look under "Questions and Answers" and then look for a question which asks something like "Memorial - Who May Partake."
I personally think that the WT, despite its scriptural argumentation, wants to make a distinction between the two classes at the Memorial to keep track of statistics - to always be able to show statistically that the numbers of the remnant are decreasing in comparison to the increase of the "great crowd." There may be more to it than that, but enough said already!
Justin