In Christ or in union with Christ

What does everybody believe in regards to what Paul speaks about of being in Christ or being in union with Christ? I believe all humanity is born into this world united to Adam, or are in Adam. And by the grace of God, some in Adam believe in the gospel… and are moved from being in union with Adam and are now in vital union with Christ. Understanding our vital union with Christ is a very essential truth to receive.

He has delivered us from the domain of darkness and transferred us to the kingdom of his beloved Son, - Colossians 1:13

And you were dead in the trespasses and sins in which you once walked, following the course of this world, following the prince of the power of the air, the spirit that is now at work in the sons of disobedience— among whom we all once lived in the passions of our flesh, carrying out the desires of the body and the mind, and were by nature children of wrath, like the rest of mankind. But God, being rich in mercy, because of the great love with which he loved us, even when we were dead in our trespasses, made us alive together with Christ—by grace you have been saved— and raised us up with him and seated us with him in the heavenly places in Christ Jesus, so that in the coming ages he might show the immeasurable riches of his grace in kindness toward us in Christ Jesus. For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast. For we are his workmanship, created in Christ Jesus for good works, which God prepared beforehand, that we should walk in them. - Epehsians 1

For God, who said, “Let light shine out of darkness,” has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ. - 2 Corinthians 4:6

Adam is our federal head in dis-grace - Christ is our federal Head in grace (federal = covenantal). Both men have a public character - neither is a mere private individual; and all men are in one or other. AFAICS.

You see how spiritual truth is neither an exclusive Catholic truth or a Protestant truth? Jesus Christ is full of grace and truth, and the church is not on this side of glory. Both Christian communites know in part and error in part. Both Christian communites have members who are in Adam, and some who are in Christ.

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