If Adam earned it?

Systematic Theology (Berkhof) – p.496, 265 comparison. Little bit confused.

If Adam earned it?

Christ merited all the blessings of salvation for us and these blessings are applied to us through the union. It’s only in Him that we enjoy blessings of effectual calling, regeneration, conversion, justification, sanctification, perseverance, and glorification. This union is mediated through the Holy Spirit and it is the Spirit of Christ who applies the objectively accomplished work of redemption to His body, His Church.

Pastor James talked about Christ earning everything for us. He said it’s like a winning lottery but he asked it’s no use if we do not cash it. And this is the work of the Holy Spirit who “will glorify me [Christ], for he will take what is mine and declare it to you” (John 16:14).

What if the first Adam had fulfilled the conditions of the covenant of works? Let’s just suppose that Adam had earned the eternal life as our representative. How do we subjectively experience and enjoy this blessing? Here, prof. Berkhof seems to say ” There was the tie of a common life between him and all his progeny, and this made it possible that the blessings of the covenant of works, if these had eventuated, could have been passed on to the whole organism of mankind in an organic way” (Berkhof p.496)

Why do we have to be born again? Because we cannot make ourselves believe in Christ. We are spiritually dead that we should be born of God, should be born again. Could have it been possible that if Adam passed the probation period we would enjoy covenant blessings just by natural birth? Presupposing Adam was already in a federal union with all his offspring, would have we been possible to enjoy the blessing just by natural birth? I think it’s very likely but can be perfectly sure about this? Does the Bible imply it?

If we can enjoy the blessings earned by Adam by means of natural birth,

I’m presupposing the federal relationship between Adam and his offspring. .

The sin of Adam would not have passed to his offspring if he was not in the covenant of works established by God.

The blessings of Adam would not have passed to us if he was not in the covenant of works.

I’m not sure. God doesn’t say anything. The only thing we are sure is that Adam had sinned and his sin is imputed to us because he was our representative head. We also sinned in Adam. His original sin and corruption is passed on to us because he was our head. And just like this, we are able to enjoy the blessings of Christ through the union with Christ.