Covenant Questions...

Is the New Covenant the same as the Covenant of Grace?

Is the New Covenant the same as the Abrahamic Covenant?

Is the New Covenant the same as the post-fall promise (proto-evangelium) in the garden?

Are the proto-evangelium and the Abrahamic Covenant the same as the Covenant of Grace?

Are the proto-evangelium and the Abrahamic Covenant intrinsically part of the Covenant of Grace? In what way?

Did the Covenant of Grace precede them? How?

Is the New Covenant part of the Covenant of Grace? In what way?

What initiated the Covenant of Grace? ... A broken covenant of works or, if you don't like that, Adam's breech of God's command which promised life upon obedience and threatened death upon disobedience? 

Was the Covenant of Grace only a response to the broken Covenant of Works? 

If in some way the Covenant of Grace was initiated before or preceded the Adam's sin in the garden, how?

Is the Old Covenant-Mosaic administration of the Covenant of Grace merely the infancy (not fully formed) state of the New Covenant-Gospel administration? 

How are the Old and the New different administrations of the Covenant of Grace?

Are they highlighted more by their similarities or their dissimilarities? 

If the Covenant of Grace runs through the Old and New testaments, and if the Mosaic Covenant given at Sinai is the Old Testament administration (law given, types pointing to fulfillment) of the Covenant of Grace under Moses, is Christ's Covenant given at the cross in his blood the New Testament and final administration (grace and truth realized, fulfillment) of the Covenant of Grace?

"... who saved us and called us to a holy calling, not because of our works but because of his own [eternal] purpose and grace, which he gave us in Christ Jesus before the ages began [times eternal], and which now has been manifested through the appearing of our Savior Christ Jesus, who abolished death and brought life and immortality to light through the gospel...” (2 Tim 1:9-10)