The free will “acceptance of God’s charity”, is seen as a purely selfish act on the sinner’s part and thus a sin, but the unregenerate sinner is always sinning. Everyone will humble so humility is not a spiritual activity:
Luke 14:11 For all those who exalt themselves will be humbled, and those who humble themselves will be exalted
No, not everyone humbles himself, this is the why of Luke 14:11.
Humbly accepting undeserved charity as charity for selfish reasons is not a righteous choice, since it is a selfish choice, but it does allow God to shower the person with gifts.
If a person accepts the gospel as charity, it means they understand that God wants to reconcile with them, which is a measure of faith in Christ, since it is the gospel. I suppose that Hagar and Ishmael accepted charity from God because they were desperate enough, not because they had a "saving faith." So I do accept your idea that unregenerate people can accept charity, but the fact is, they have to be desperate enough, otherwise they will proudly decline.
But we aren't talking about mere acceptance of charity by natural order. The subject matter is regeneration preceding faith in Christ. This is an apples/oranges distinction. Desperation to accept charity in the natural sense can lead one to a spiritual wisdom to accept Christ, but since the latter is a spiritual matter, it requires God's supernatural dealings. A person must first see himself spiritually bankrupt before looking to Christ for help. Only those people who God reveals the truth to are able to exercise hope in Christ, after seeing their spiritual bankruptcy. Therefore, properly reading 1 Jn. 5:1, Eph. 2:5, 1 Cor. 2:14 and other places shows us that if a person comes to real faith in Christ, they have already been regenerated.
So it is not correct hermeneutic to claim that just because a person can naturally accept charity, therefore you can conclude that a person can naturally believe in Christ. But if you agree that faith comes after regeneration, then what is your point about this natural humility?
Again, being willing to humbly selfishly accept pure undeserved charity as charity is not something others would see as being honorable, glorious and exceptional sine the lowliest mature adult on earth go do that. What makes selfishly accepting pure undeserved charity “worthy” of anything?
Paul is not saying the unbeliever cannot make a sinful selfish choice.
I don't get your point in this. If a person can naturally accept charity, how does that relate to faith after regeneration? Things that happen in the world and things that people do can point to a spiritual truth, if one looks for it. But I don't see that your argument makes a valid point contrary to the OP.
Mark 2:16 And when the scribes and Pharisees saw Him eating with the tax collectors and sinners, they said to His disciples, “How is it that He eats and drinks with tax collectors and sinners?” 17 When Jesus heard it, He said to them, “Those who are well have no need of a physician, but those who are sick. I did not come to call the righteous, but sinners, to repentance.”
The Spiritual Jew uses lots of good verses.
Cults also use lots of good verses, but it doesn't mean they are righteous before God. I don't see a clear answer to my question. But I'll explain v. 17 to you, since you seem vague on it: Jesus was accommodating the Pharisees by saying "I did not come to call the righteous..." because they
thought they were righteous, not because they actually were. Jesus was calling those who
knew they were sinners (and actually were).
It is obvious to me from scripture, but what is your answer to: What logical good reason does God use for those He regenerates and those He does not regenerate?
Ok, finally I think this is the crux of the problem, the real issue. Why does God save some and not others? Is this a good paraphrase of your question?
God has no obligation whatsoever to save anyone. According to Eph. 2:1-3, we all came into the world living unworthily and sinfully, and are culpable for the sin we commit. And as the scripture testifies, we will all be judged according to our deeds. Nevertheless, we are not saved by our deeds, good or bad. God's grace is unmerited, which means those of us who are gifted by God did nothing to deserve it. God's mercy toward us is an exception to His justice which He will exercise eventually on everyone else. "God is just, and the justifier of the one having faith in Christ."
Therefore, God intends to exercise His justice on the world. But He has some on whom He had mercy, and called them (us) out of the world. These people will see the ultimate joy of His grace which He has bestowed on us - Eph. 2:7. So then, it was totally and completely in God's mind and in His hand who He chose to regenerate (and continues to choose, since there is a remnant of people who are still coming to Christ). Here is real spiritual humility - to acknowledge that only God has control of me being saved.
I could have been lost with the rest of the world, happily on my way to hell in a hat basket, and would certainly have deserved lake of fire judgment. But God interrupted my self-centered life, and called me out of it, that special calling talked about in Rom. 8:28 in which we are foreknown, predestined, called, justified, and glorified. It's according to God's purpose, not mine.
According to a subjective and self-centered experience, it may look as though we have control of our eternal destiny. People claim "we chose to believe," which is a false idea. We choose to believe in Christ because we already believed. No one can choose to believe something they don't believe in. No one does that. We choose to submit to God and become a follower of Christ because we have been convicted by the Spirit of the truth of the gospel. And being convicted, we already know it to be true, which means we believe it. There is no unbelieving it. There may be resistance because of sin or confusion, but when the Spirit convicts, He is persistent. Such drawing is the powerful hand of God. How can God's mighty hand be resisted by our feeble foolish wills? God makes a way.
From a strictly human perspective, it looks as though you are choosing, and God is passively waiting for you to choose rightly, so that He can respond with spiritual action. But it only looks that way, because it's traditionally taught. Note the words of the song, "see on the portals, He's waiting and watching, calling 'oh, sinner, come home'." But in the spiritual realm, God is at work - revealing Himself, illuminating the truth, giving His Spirit to join with you - Eph. 2:5. Spiritual wisdom is needed to favorably respond to the gospel heard, and only God can grant that.
So the logical reason why God saves some is that He has mercy, and love, toward those He chose to save. Why then doesn't He save everyone alike? Is God obligated to that? Obviously not. How can God reveal His grace to those He saves, unless there is a contrast of the justice He exercises on those He does not choose to save? How can we gratefully appreciate God's love for us, if He loves everyone the same? God electing some out of the world induces a greater appreciation of His gracious action, and should induce greater worship of the God who saves.