What do you mean by “totally depraved spiritually”, because we might be in agreement?
Yes, the way I read the NT is the gospel is spiritual in nature. So when Paul described the human condition in Rom. 3:10-18 (the spiritual condition of the unregenerate, that is, those under sin), he is talking about their relationship with God. I get the idea that many people confuse these words with what they experience in the natural, and what they reason in their minds. So, we have people thinking they are "basically a good person," because they reason that they aren't as full of the bitterness it describes. But after a person comes into the light of the gospel and embraces the revelation of the scripture, they begin to understand just how bitter they have been in spirit. In my own experience, I thought I was essentially a happy person when I was doing my own thing. But after coming to Christ and learning how to live the Christian life, I came to realize how evil, conceited, and bitter I was, and only after years of studying scripture to understand it, I now can see clearly that I was a hater of God. I did not know that at first. So, when Paul wrote that we were dead in sin, I now see just how dead I was; it means "without God in the world." So, God must speak to a person's spirit and reveal Himself, and the way I read the NT, that only happens when a person is born of the Spirit. It is a spiritual event, not a natural one, and therefore can't be determined by natural means. This is essentially the teaching of Total Depravity. It means spiritually.
The “fall” is not used in scripture to describe Adam and Eve’s first sin. We know humans did obtain “knowledge of good and evil”, but is knowledge bad in and of itself?
This knowledge is not mere experience. The serpent persuaded Eve to partake, which presumes that knowledge was a good thing, and Eve believed it. But we know that she was deceived. This kind of knowledge is a determination, and so there came a separation between God and man at that point, and this is why we call it "the fall." It's not a fall from grace, but a fall from God, and from a right standing with Him.
It also means we became spiritually dead, and this is what Paul is writing about in Eph. 2. The term "free will" as it is used in this forum means that human will is separated from God's will, and the implication is that it is not reconciled to God. In this sense, "free will," or autonomy, is the problem, because we were created to be led by the Spirit and be in harmony with God's will.
Gen. 3:22 "And the LORD God said, 'The man has now become like one of us, knowing good and evil. He must not be allowed to reach out his hand and take also from the tree of life and eat, and live forever.'" This means that man was separated from God, had a will "free" from God, and determined for himself what is good and evil. So this knowledge has self-willed determination in it.
Ro. 3:10-18 is very poetic and at least some is a hyperbole like:
“Their throats are open graves… “
“The poison of vipers is on their lips.”
“ruin and misery mark their ways”
But lets stick to: “no one righteous, not even one;11 there is no one who understands; there is no one who seeks God.12 All have turned away, they have together become worthless; there is no one who does good, not even one.”
I am not saying the unbelieving sinner can do anything noble, worthy, righteous, or beneficial to others or God. 1 Cor. 13:1 If I speak in the tongues of men or of angels, but do not have love, I am only a resounding gong or a clanging cymbal. 2 If I have the gift of prophecy and can fathom all mysteries and all knowledge, and if I have a faith that can move mountains, but do not have love, I am nothing. 3 If I give all I possess to the poor and give over my body to hardship that I may boast, but do not have love, I gain nothing.
All unbelieving sinners do not have Godly type Love, so they are nothing and gain nothing.
But can the sinner do “something”?
Jesus could use any word He wanted to best communicate, so describing the prodigal son in the foreign land twice Christ used “dead”, so by Jesus’ definition of a spiritually “dead” person, that person can for purely selfish reasons turn to his father. In like selfish reasoning and for the same motive spiritually “dead” sinners can turn to God. This is not righteous since unselfishness is righteous and the person is doing it for selfish reasons. The sinner is not doing something worthy or honorable since he/she is wimping out, giving up and surrendering to their enemy while they are still hating their enemy, but like a surrendering soldier in battle the soldier is just willing to humbly accept pure undeserved charity from his/her enemy. They may realize they really should be tortured to death for their previous war crimes, but God showers them with gifts which include Godly type Love and eternal life.
The unbelieving sinner is not “saving himself” any more than the prodigal son “saved” himself, all the saving belongs to the Father.
I fully agree the unbelieving (hell bound) sinner has no reason to Love God, he/she does not even have the Love to Love God. It is only after the unbelieving sinner willingly accepts God’s sacrificial pure charity as charity that the sinner is showered with unbelievable gifts, the greatest being Godly type love and eternal life.
If we understand Paul's teaching in Eph. 2:1-10, the sinner can do nothing at all in regard to his salvation because he is spiritually dead - "without God in the world." And until God interrupts his life with the gospel and conviction of the Spirit, he will not do anything or choose anything in regard to his salvation. Faith in the gospel is a spiritual matter, and it takes a spiritual person to perform it.
Biblical faith is not a mere mental idea or acknowledgement of what is true, which is how the world defines it. Biblical faith finds understanding of what God says about Christ, and therefore obedience follows 100%. Not saying it can't be resisted, since it is likely we all felt and experienced resistance to the gospel message.
But obedience is the result (fruit) of faith in Christ, and the decision to submit is only made after God has revealed Himself in the message - it is a supernatural event accomplished in the spiritual dimension. The understanding about Christ needed to respond to the gospel takes God revealing Himself and what He is about to individuals.
So, the point is that an unbelieving sinner will never willing accept God's charity unless God grants him understanding of it, as Jesus said "no one can come to me except the Father draw him." This metaphor essentially means that God must give understanding to a person by making him spiritual, as 1 Cor. 2:14 teaches.
And in reference to the prodigal son, the way I understand it from Paul's teaching is that the man was born again when he "came to his senses" and realized that his father's house had blessings, and he had the hope that he could return and be accepted in some way. And that realization is the very knowledge and wisdom that only comes from above. The parable's setting is the natural realm, but teaches us spiritual truth.
TD