Again, if I am not expressing this well, please forgive me. I am trying to do my best to voice my concern here. The notion of a moral and legal requirement that someone must pay the sin debt itself does not seem to follow Scripture. Part of this, however, is that I do not believe salvation to have the law or morality in mind. I think it has always been about faith, not the Law.
Also, Deuteronomy 21:22-23 is a part of the Law. This passage gives instructions for those who have been deemed worthy of death, and he is put to death by hanging him on a tree. His corpse was to be buried the same day so as not to defile the land because he who is hanged is accursed of God. Paul reaches back to this curse and applies it to Jesus – He redeemed us from the curse of the Law by becoming a curse for us. For it is written: “Cursed is anyone who is hung on a tree” (Galatians 3:13). I do not know that it is correct to say that Jesus was not “condemned under the Law”. Paul tells us that this is exactly what occurred. This fits, I believe, within the covenant understanding rather than a moral/legal understanding (Jesus falls under a curse, condemned, by the Law but still without sin. I don’t know if this can happen under the forensic theory if based on morality or the Law).
I admire your complete transparency in this matter. I have carefully considered what you have said and here are the conclusions I have drawn. I don't think you really have a problem with the law court context. I think your difficulty is harmonizing it with your covenant view.
Let me present my covenant view from a little different angle which may prove helpful. Often we talk about the Abrahamic covenant but fail to see it in its larger sense. For example, when God spoke to Moses about this covenant he did not restrict it simply to the "Abrahamic" covenant but rather the covenant of their "fathers."
Deut 7:7
The LORD did not set his love on you, nor choose you, because you were more in number than any people; for you were the fewest of all people:
8 But because the LORD loved you, and because he would keep the oath which he had sworn to your fathers, has the LORD brought you out with a mighty hand, and redeemed you out of the house of slaves, from the hand of Pharaoh king of Egypt.
Those "fathers" are then specifically identified
Deut. 9:4
Speak not you in your heart, after that the LORD your God has cast them out from before you, saying, For my righteousness the LORD has brought me in to possess this land: but for the wickedness of these nations the LORD does drive them out from before you.
5 Not for your righteousness, or for the uprightness of your heart, do you go to possess their land: but for the wickedness of these nations the LORD your God does drive them out from before you, and that he may perform the word which the LORD swore to your fathers, Abraham, Isaac, and Jacob.
As a side note,notice that in both passages this covenant applied to Israel is stated in unconditional terms (Deut. 7:7; 9:4-5a). So the covenant was made with the 'fathers" and the children of Israel are the elect unconditional beneficiaries.
However, let us proceed with these three distinct "father's" Abraham, Isaac, and Jacob who had covenant obligations (circumcision) and keeping the way of the Lord.
De 9:27 Remember your servants,
Abraham, Isaac, and Jacob; look not to the stubbornness of this people, nor to their wickedness, nor to their sin:
De 29:13 That he may establish you to day for a people to himself, and that he may be to you a God, as he has said to you, and as he has sworn to
your fathers, to Abraham, to Isaac, and to Jacob.
De 30:20 That you may love the LORD your God, and that you may obey his voice, and that you may hold to him: for he is your life, and the length of your days: that you may dwell in the land which the LORD swore to
your fathers, to Abraham, to Isaac, and to Jacob, to give them.
De 34:4 And the LORD said to him, This is the land which I swore to
Abraham, to Isaac, and to Jacob, saying, I will give it to your seed: I have caused you to see it with your eyes, but you shall not go over thither.
1Ki 18:36 And it came to pass at the time of the offering of the evening sacrifice, that Elijah the prophet came near, and said,
LORD God of Abraham, Isaac, and of Israel, let it be known this day that you are God in Israel, and that I am your servant, and that I have done all these things at your word.
2Ki 13:23 And the LORD was gracious to them, and had compassion on them, and had respect to them, because of his covenant with
Abraham, Isaac, and Jacob, and would not destroy them, neither cast he them from his presence as yet.
Jer 33:26 Then will I cast away the seed of Jacob and David my servant, so that I will not take any of his seed to be rulers over the seed of
Abraham, Isaac, and Jacob: for I will cause their captivity to return, and have mercy on them.
Mt 8:11 And I say to you, That many shall come from the east and west, and shall sit down with
Abraham, and Isaac, and Jacob, in the kingdom of heaven.
Not only is the covenant identified with these three fathers, but Jesus identifies God with these three fathers:
I am the God of Abraham, and the God of Isaac, and the God of Jacob? God is not the God of the dead, but of the living. - Mt. 22:32
The covenant is identified with THREE Father's because these three are representative types of the THREE Persons in the Godhead and their own obligations in the everlasting unconditional Covenant toward the elect (which Israel symoblizes).
For example the term "Father" is identified with Abraham and he is said to be "The Father of all who are of faith."
For example, the term "son" is especially identified with Isaac as his only begotten Son by God who was also symbolically offered up on Mount Moriah by his Father.
For examle, Jacob is called "Israel" as he is the progenitor of Israel or type of the Holy Spirit who births all of God's elect children.
So the three Fathers represent the obligations of the Three Person's of the Godhead in the everlasting unconditional covenant of redemption whereas Israel represents a type of all the elect who are are the unconditional beneficiaries of this covenant (Deut. 7:7-8; 9:5-7).
The elect are never part of the "everlasting covenant" in terms of covenant obligations as Romans8:28-37 and Ephesians 1:4-14 have them as the unconditional beneficiaries of this covenant.
The Son of God's covenant obligation is to provide redemption for all the elect by legally satisfying the Law's requirements. The elect are chosen in him before the foundation of the world but are not "in him" as far as actual subjective redemption until they are "created in Christ" by new birth (Eph. 2:10). Prior to that creative event they are "children of wrath even as others" (Eph. 2:2-3).
The Second Adam refers to the new creation as the first adam referred to the old creation. However, there are several differences between the first and Second Adam. All mankind was created in Adam when Adam was created.However, the Second Adam was never a created being, and all "in Christ' are created in at the time of new birth (Eph. 2:10). Prior to that point, they are chosen in him according to purpose, they are represented by Christ's covenant obligations but they are not subjectively "in Christ" until new birth. This is the "everlasting covenant" and only covenant of redemption from Genesis to Revelation.
The proper understanding of the covenant of Abraham is only attained when it includes Isaac and Jacob as types of the Trinity and the everlasting covenant and only when it includes Israel as types of all the elect of God. With regard to the covenant parties it is conditioned upon them fulfilling their obligations, but with regard to the beneficiaries it is unconditional because all obligations are met by the Divine Persons between whom this covenant was made in ETERNITY when no human existed.
All other human covenants are either types of the obligations performed by the Godhead, or types of the unconditional benefits to the elect and/or a combination of both.