The following is an extract from an article I wrote when I left the Watchtower 25 years ago. It may be helpful in reasoning with a JW about the anointed/Great Crowd distinction.
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To divide people into those with a heavenly hope and those with an earthly one is not a Biblical concept. “There are new heavens and a new earth that we are awaiting according to his promise, and in these righteousness is to dwell” (2 Pet.3:13), but that does not mean that God has selected some for heaven and some for earth. In the sermon on the mount Jesus began by making the nine statements known as the beatitudes, in which he declares certain types of people to be happy or blessed, and in each case he makes a promise concerning their future. (Matt.5:3-12) It is clear that Jesus is painting a composite picture of all those who belong to Him, not a list from which individual statements could be chosen and applied to individuals at random. Among the promises that Jesus makes are, “the kingdom of the heavens belong to them”, “they will inherit the earth”, “they will see God” and “they will be called sons of God.” If we are part of Christ’s body then we all have the same hope as Paul reminded the congregation at Ephesus. “One body there is, and one Spirit, even as you were called in the one hope to which you were called; one Lord, one faith, one baptism, one God and Father of all who is over all and through all and in all.” (Eph.4:4-6) Since Jesus will keep all of His promises we can conclude that seeing God, and inheriting the earth, are not mutually exclusive destinies......
There are, by the Bible’s reckoning, only two sorts of people. Everybody begins as the same sort; children of Adam or, “in Adam”. In this state they are, under “condemnation” (Rom.5:18), “alienated” from, and “enemies” of God (Col.1:21), “children of wrath” (Eph. 2:3), under the “authority of darkness” (Col.1:13), walking in “accord with the flesh” (Rom.8:4), “slaves of sin” (Rom.6:17), and “dead in their trespasses” (Eph.2:1&5).
This is not the Bible’s description of an especially depraved person but of the normal human condition from God’s perspective. It matters not at all that we may not feel guilty or under condemnation, God’s inspired word says emphatically that we are.
The other sort of person is, “in Christ”. These are, “declared righteous” (Rom.5:1), “reconciled to God” (Rom.5:10), “born of God” (1 Jhn.5:1) or “born again” (Jhn.3:3), “beloved children” of God (Eph.5:1), “transferred into the kingdom of the Son of God’s love” (Col.1:13), indwelled by “God’s Spirit” (Rom.8:9), part of a “new creation” (2 Cor.5:17), and “alive together with the Christ” (Eph.2:5).
The difference between these two groups is not that the latter are more worthy, or that they try harder to be good, nor that they naturally have more interest in spiritual matters or an ability to read and understand the Bible. It is simply that they have put faith in God’s provision for their salvation. They have humbly abandoned their attempts to earn His favour and trusted in Jesus as their Saviour. For someone to feel that these blessings could not apply to them because they are not worthy is for that person to miss the point of the good news. Nobody is good enough, that is exactly the point at which the gospel begins.
We cannot pick and choose which of the above descriptions of those who belong to God apply to us, and which ones do not. We cannot for example be reconciled to God, but not be a “new creation”. (see 2 Cor.5:16-19) We cannot be “beloved children” of God, but not be “born of God”. We cannot draw a line between calling God “Father”, and calling him, “Abba, Father”. If we have not been adopted then we are not His children, He is not our Father, and we have no right to call Him such at all. If we are His children then we are also joint heirs with Christ. If we are “in harmony with the Spirit” then “God’s Spirit truly dwells” in us, but if we do not have the Holy Spirit then we do “not belong to” Christ. (See Rom.8:9-17) Only if we are “led by the Spirit” can we produce the “fruitage of the Spirit”. But again, if we are, then we can cry out “Abba Father” and we are adopted as sons of God and joint heirs with Christ. (See Gal.4:6,7;5:16-24)