Here is an explanation of why I have a problem with the doctrine of "Imputation." It is not so much that it is incorrect but that as I use the term it becomes incorrect. I'm not sure how to resolve it? But the following may help you better understand my concern about using the term....
Was sin Adam and Eve committed a Sin Nature "imputed" and therefore applied to their descendants? Or, was Sin a disease that naturally spread from parent to child, etc.?
No, I believe Sin is bound up in the makeup of a person who works. When his work becomes defective, or becomes sinful, the product is going to be defective and the product of sin. In the case of parenting children, the sin-infected parents work, and their product, ie the children, are born in sin simply because the parents can no longer produce perfect children.
The children are born with a spiritual nature that tends to rebel against God, indeed is to some measure rebellious against God's word and authority. What Adam and Eve did to corrupt their own nature was produced, by their work of reproduction, in their children.
So it was very important that the priests of Israel, who were also sin-infected, understand that their work in bringing Israel into relationship with God could not produce something perfect and final. They could not lead Israel to Eternal Life because they themselves were sin-infected, and did not qualify for Eternal Life, let alone lead others to it by the work of ministry.
So everything ministered under the Law was an imperfect work, and could not lead Israel into anything more than a relationship with God, and could not lead to Eternal Life, except indirectly, by prefiguring it. But this priesthood was patterned after the heavenly priesthood of Christ, whose works did qualify to give to sinful people not just a relationship with God, but also Eternal Life.
Jesus was God's earthly priest who qualified as a perfect priest to give Eternal Life to sinners, which is what he did by dying on the cross. In this way he qualified to give Eternal Life to all sinners, because he gave his all to sinners.
The Scriptures say Jesus "became Sin" for us. This does not, I think, mean he actually took the form of a sinner. Rather, he became, in Paul's short-hand terminology, a substitute for our sin.
This was, I think, the language of the Law in which priests offered sacrificial animals as substitutes for the people of Israel. In that way Christ became "Sin for us." He was taking punishment from sinners, which only sinners deserved.
So Sin is not "imputed" to Adam's descendants. And neither is righteousness "imputed" to sinners, in my view. Rather, Christ gave Man an opportunity to participate in his righteousness as sinners by giving to them a righteousness generated along with their works.
In this way Christ gave us God's righteousness, but certainly did not impute perfect righteousness to us. He fully realized, when he gave us his righteousness, that we are not righteous apart from his aid.
Believing this need to partake in his righteousness was viewed by God as righteousness because it is acceptance of the need to partner with God in His provision of righteousness to us. It is indeed something we must do to be saved, but it is not a work that "earns" salvation, but rather, merely "accepts" Salvation. It accepts Christ as the only substitute for our life and work, so that what we do produces things that are eternal through participation with him.
I think it might've been wrong for God to "impute" sin that Adam committed to his children without explaining that work was built into Man with the responsibility to produce like kind. Nevertheless, God provided in Man's makeup the means of correction of this problem through His redemptive word and ultimately through Christ's death and word of Salvation.
In the same way it might be viewed as wrong for God to impute Christ's perfect righteousness to sinners who receive His righteousness, if for no other reason than it is not true. People who receive Christ's righteousness are *not* perfect, and don't *become perfect* when they receive it.
If God sees this perfect righteousness as "imputed" I see no reason for this to become the means for Him to justify giving His righteousness to us? He could simply give His righteousness to us through grace. Why must God impute perfect righteousness to us in order to justify giving us grace?
It was Christ's perfect work as a heavenly priest that enabled him to give righteousness to men. And it was the fact he suffered sin on earth that enabled him to give righteousness to sinners.
It being a perfect work it could produce works that turns sinners into saints, and results in redemption to Eternal life. The work of a Christian minister, like a redeemed priest, can bring full redemption to others through their work and word!
Some have a problem with seeing "Faith" as a "Work." They complain that we can do no Work to earn our Salvation. Therefore, Faith is not a Work. And if we don't Work at all, obtaining Salvation is a matter of "imputing" righteousness to us.
But this is, I think, semantical. In context we may use the word "Work" as a "work that earns Salvation." Or, we may in a different context use "Work" as a Work that is done to obtain Salvation by accepting the prerequisites of getting that, which is simply accepting our need to be transformed into followers of Christ's word.
True Work that obtains Salvation is, I think, merely a matter of accepting God's conditions for righteousness and for Salvation. We must accept God's Word in all matters, in place of living independently of God.
True Work acknowledges our need for a relationship with God and His Word in order to find Salvation and produce righteousness that lasts. And this kind of "Work" is called "Faith," in contrast with the kind of "Work" that attempts to operate outside of God's control and influence.
When God viewed Abraham's Faith as Righteousness he was not "imputing" righteousness to something that was not a Work. Rather, he was accepting that Abraham was meeting the prerequisite for walking in God's righteousness by accepting the Lord/Servant relationship. This is the kind of "Work" that does not earn Salvation, but rather, *obtains* it.
Abraham's Faith achieved that quality of Work by which he obtained God's pleasure because he agreed with God's program of grace, which began with a relationship between Sinner and Holy God, and ends with the Sinner conforming, by grace, to that Holy God. That happens when we accept the work of the perfect priest, who properly disposed of sin, not in a flawed way, but in a perfect way.
Christ's Work was perfect, and included both forgiving us and giving us access to his righteousness. This is Work that could produce like-kind, and form his righteousness within us, even through the mechanism of grace.
By his Faith Abraham did not "earn" God's pleasure by doing work independent of God, or on his own. But he agreed that he needed God's help to begin the path that leads to the work of Christ, whose work did absolve us of our Sin debt.
Anyway, that's how I see it.