@CrowCross
1. Forward movement of his purpose of the Covenant of Redemption through the Seed that would crush the serpents head. Not all those he covenanted with in this way were Seed bearers, but if you look at the primary ones, Noah, Abraham, David, you will see that they are. And the others, such as the prophets, were within a covenant relationship God had established in the Sinai Covenant. So it was serving the same purpose.
2.No. John 3:1-15.
3. It is a covenant relationship between God and believers. Not a dispensational non-relationship. It is post first advent, crucifixion, resurrection, ascension, exaltation. Christ, the mediator of a new covenant, making the old covenant obsolete because he is the fulfillment of all the promises of the OC, making it no longer necessary. It had served its purpose. And what was that purpose? Christ and him crucified.
4. It is a covenant relationship. (Romans 3: 20,24,28; Phil 3:9; Gal 2:16-21; Heb 8:13).