Adam and Eve were seen as good, and then very good during
the process of creation... not perfect. We are perfected in Christ.
It seems redundant to have human nature, and sinful nature, as
separate in your list, since human nature is inherently sinful.
I hear you. I would say that the Human Nature is vastly different from the Sinful Nature, for Colossians 2:9-15 does say that Christ Circumcises the heart of the Human Nature, but the Sinful Nature. For even Jesus had his own Human Nature, and it seems fair to say that we would all agree that the Human Nature of Christ was not sinful or corrupt in any way. It was the Human Nature of Christ that “served” Himself to the Cross; that He would serve the Lord in death, burial, and Resurrection.
Acts 3:13 NKJV - "The God of Abraham, Isaac, and Jacob, the God of our fathers, glorified
His Servant Jesus, whom you delivered up and denied in the presence of Pilate, when he was determined to let Him go.”
When Paul wrote about the weakness of the Human Nature, I believe that what he meant is that it is unbridled, that it will serve anything, including the Devil.
As Peter outlined in 2 Pet 1:4, he states that we are given the Divine Nature. This wouldn’t replace the Human Nature, for the Human Nature remains, for it is what lends to our service to the Holy Spirit. It would seem that we, again, never lose this Human Nature.
Romans 6:19 NLT – “Because of the weakness of your human nature, I am using the illustration of slavery to help you understand all this. Previously, you let yourselves be slaves to impurity and lawlessness, which led ever deeper into sin. Now you must give yourselves to be slaves to righteous living so that you will become holy.”
Service seems to equate to the Human Nature, and it is that Human Nature that remains and after the Divine Nature is given, the Human Nature kicks in a begins to serve.
I don’t mean to offend . . . this is just what makes sense to me, and have thus concluded that the Human Nature serves . . . nothing more, nothing less. But it is because it will serve the Devil or Christ that makes it “weak.” By itself, the Human will serve anything, which is why it needs the Divine Nature, so that that we will serve the Lord instead of the Devil.