Jerry does not use the category of the new covenant, which was between Christ and God, Christ acting on our behalf as a rep, as a 2nd Adam. Christ was 'made a covenant for the nations' says Isaiah. so the road he's gonig down is going to be Christlessly confusing.
How anyone can get that Christ is the covenant for some and not for others is confusing.
All the saved, whether Jew or Gentile come into the body of Christ and are seated with him in heaven.
Revelation 21:21 I saw the Holy City, the new Jerusalem, coming down out of heaven from God, prepared as a bride beautifully dressed for her husband.
Hebrews 12:23 22Instead, you have come to Mount Zion, to the city of the living God, the heavenly Jerusalem. You have come to myriads of angels 23in joyful assembly, to the congregation of the firstborn, enrolled in heaven. You have come to God the judge of all men, to the spirits of the righteous made perfect,
1 Corinthians 6:17 But whoever is united with the Lord is one with him in spirit.
John 6:56Whoever eats my flesh and drinks my blood remains in me, and I in him.
Ephesians 2:6 And God raised us up with Christ and seated us with him in the heavenly realms in Christ Jesus,
Colossians 3:1 Since, then, you have been raised with Christ, set your hearts on things above, where Christ is, seated at the right hand of God.
Colossians 3:3 For you died, and your life is now hidden with Christ in God.
Colossians 1:13 For he has rescued us from the dominion of darkness and brought us into the kingdom of the Son he loves,
Romans 8:9 You, however, are not in the realm of the flesh but are in the realm of the Spirit, if indeed the Spirit of God lives in you. And if anyone does not have the Spirit of Christ, they do not belong to Christ.