It's always important to get at the "original error" in these cases, which appears to be this point:
If for no other reason than recognizing that God blames and praises man should one readily accept that man indeed has a free will today IF he is a moral agent and as such held accountable for his moral intents. Scripture clearly represents God as holding man accountable, therefore our wills must indeed be free. Man is a willing rebel and not simply the victim of his circumstances.
In other words, God is incapable of holding man accountable for sins that man was bound to commit. What this is really saying is that we cannot be held accountable for the free will sin of Adam, which has corrupted us. This is a man-made dogma. Without it, the whole house of cards comes tumbling down. (Indeed, it can't stand up under the mighty breath of God's Word, but that's for later.)
Consider some of the strange and inconsistent "exceptions" and "coincides" promoted by this view:
It's unimportant that Cain was conceived after the Fall.
Circumcision is in no way related to the fact that sin is passed through the man's seed.
The virgin birth wasn't necessary to avoid man's corrupt seed.
Man is born morally neutral, yet has "coincidentally" always chosen evil. (More on this later.)
Infants either haven't committed any actual sins and are thus blameless before God (ignoring, of course, "all have sinned") or aren't "accountable" because they evidently don't have have enough intellectual capacity to make fair choices.
Romans 5:6. You see, at just the right time, when we were still powerless, Christ died for the ungodly. Very rarely will anyone die for a righteous man, though for a good man someone might possibly dare to die. But God demonstrates his own love for us in this: While we were still sinners, Christ died for us.
Romans 5:10. For if, when we were God's enemies, we were reconciled to him through the death of his Son, how much more, having been reconciled, shall we be saved through his life!
How does "morally neutral" translate into "powerless," "ungodly," "sinner," or "enemy?" I do wonder how man can be "powerless" if it is possible for him to avoid sin.
A corrupt tree bringeth forth only evil fruit.
Fortunately, it has been conceded that it is theoretically possible for man to save himself by completely avoiding sin. Let us build on that. Notice, going back to an earlier statement, that man (for some reason) always chooses evil. This can best be understood in the sense that man is bound to commit at least one sin in his life. And one sin, after all, will damn you.
Thus fact that neutral man doesn't need salvation by grace alone can therefore hardly be denied:
Proponents of the morally neutral man cannot claim that *all* of man's actions are sinful, because of course that would defeat the entire purpose their position. Therefore the reality of the matter for Decision Theologians is that God is pleased with some (most?) of what you've done on your own. Sure, you can't *completely* avoid sin. No one is saying that. Nor is anyone saying that your good works can "balance out" or "make up for" your sin.
Nevertheless, you *have* done works that were *not* laid upon Jesus at the cross.
Thus, I bet if you go out to five or six sigma (on the population bell curve), you'll find people who only needed Jesus to pay for 5% of their works. (95% of their works were good.) If you drop down to two sigma, maybe you'll find people who need atonement for 50% - 70% of their works. So they need Jesus a bit more. And on it goes. Sure, really bad people will pretty much need Jesus the whole way, but I bet even Hitler did a least one righteous deed. Thus, the claim that man is morally neutral turns "salvation by grace alone" into nothing more than man needing God to fix those potentially few mistakes that he's made. (As opposed to man being able to fix them himself.)
In other words, man can avoid (or at least minimize) the need to turn to God, through his obedience and good works. What's the solution to sin? Stop sinning. That way you won't have to repent anymore. This is commonly known as "works righteousness." And when papists commit this error, Decision Theologians claim they they are deniers salvation by grace alone. This might be considered hypocritical.
Back to the "original error."
Scripture clearly represents God as holding man accountable, therefore our wills must indeed be free.
This against:
But the gift is not like the trespass. For if the many died by the trespass of the one man, how much more did God's grace and the gift that came by the grace of the one man, Jesus Christ, overflow to the many! Again, the gift of God is not like the result of the one man's sin: The judgment followed one sin and brought condemnation, but the gift followed many trespasses and brought justification. For if, by the trespass of the one man, death reigned through that one man, how much more will those who receive God's abundant provision of grace and of the gift of righteousness reign in life through the one man, Jesus Christ.
Consequently, just as the result of one trespass was condemnation for all men, so also the result of one act of righteousness was justification that brings life for all men. For just as through the disobedience of the one man the many were made sinners, so also through the obedience of the one man the many will be made righteous.
Conclusion? Repent of the evil notion that God somehow can't hold us all accountable for the sin of Adam that has "unfairly" corrupted us. He can and does. It's not necessary for the Fall to be continually repeated by every person in order for that person to bear full responsibility for sin.
Indeed, according to Paul, the *fact* that God does hold us accountable for the one "original sin" is the *basis* for why God allows the one Son of Man to redeem us all. Thus, if one rejects that Adam's sin resulted in our condemnation, there is a an obvious corollary: Christ's death doesn't result in our righteousness.
Thus, if you ignore the condemnation brought on you by Adam's original sin (and instead presume you are condemned because of those potentially few mistakes you've made), you cannot expect Jesus to atone for those mistakes and cover them with His Righteousness.
Here's another nail in the coffin of Decision theology.
Not only that, but Rebekah's children had one and the same father, our father Isaac. Yet, before the twins were born or had done anything good or bad—in order that God's purpose in election might stand: not by works but by him who calls—she was told, "The older will serve the younger." Just as it is written: "Jacob I loved, but Esau I hated."
What then shall we say? Is God unjust? Not at all! For he says to Moses,
"I will have mercy on whom I have mercy,
and I will have compassion on whom I have compassion."
It does not, therefore, depend on man's desire or effort, but on God's mercy. For the Scripture says to Pharaoh: "I raised you up for this very purpose, that I might display my power in you and that my name might be proclaimed in all the earth." Therefore God has mercy on whom he wants to have mercy, and he hardens whom he wants to harden.
One of you will say to me: "Then why does God still blame us? For who resists his will?" But who are you, O man, to talk back to God? "Shall what is formed say to him who formed it, 'Why did you make me like this?' "Does not the potter have the right to make out of the same lump of clay some pottery for noble purposes and some for common use?
Repent, Decision Theologians, you who claim that God can only blame those who have the ability to make some kind of "moral choice." Repent of questioning God, for he does blame you for the "original" sin Adam freely chose to commit; that choice was passed on to you. Repent, you who claim that salvation depends on man's "desire" or "effort" or "choice" instead of solely upon God's mercy. You cannot make a choice, Adam chose for you. Repent! Discard all your sinful, fallen assumptions. Stop thinking that salvation depends on your decision. Turn to Christ ALONE, lay *ALL* your sins at his feet (meaning those good works that you think aren't sins, like your "decision") and ask forgiveness. He will surely grant it. Then open your Bibles and start reading.