[i]You make the power of "Free-will" to be—'that certain small degree of power, which, without the grace of God, is utterly ineffective.'
Do you not acknowledge this?—Now then, I ask and demand of you, if the grace of God be wanting, or, if it be taken away from that certain small degree of power, what can it do of itself? 'It is ineffective (you say) and can do nothing of good.' Therefore, it cannot do what God or His grace wills. And why? because we have now separated the grace of God from it; and what the grace of God does not, is not good. And hence it follows, that "Free-will," without the grace of God is, absolutely, not FREE; but, immutably, the servant and bond-slave of evil; because, it cannot turn itself unto good. This being determined, I will allow you to make the power of "Free-will," not only a certain small degree of power, but to make it evangelical if you will, or, if you can, to make it divine: provided that, you add to it this doleful appendage—that, without the grace of God, it is ineffective. Because, then you will at once take from it all power: for, what is ineffective power, but plainly, no power at all?
Therefore, to say, that the will is FREE, and that it has indeed power, but that it is ineffective, is what the sophists call 'a direct contrariety.' As if one should say, "Free-will" is that which is not free. Or as if one should term fire cold, and earth hot. For if fire had the power of heat, yea of the heat of hell, yet, if it did not burn or scorch, but were cold and produced cold, I should not call it fire, much less should I term it hot; unless, indeed, you were to mean an imaginary fire, or a fire represented in a picture.—But if we call the power of "Free-will" that, by which a man is fitted to be caught by the Spirit, or to be touched by the grace of God, as one created unto eternal life or eternal death, may be said to be; this power, that is, fitness, or, (as the Sophists term it) 'disposition-quality,' and 'passive aptitude,' this I also confess. And who does not know, that this is not in trees or beasts? For, (as they say) Heaven was not made for geese.
Therefore, it stands confirmed, even by your own testimony, that we do all things from necessity, not from "Free-will:" seeing that, the power of "Free-will" is nothing, and neither does, nor can do good, without grace. Unless you wish efficacy to bear a new signification, and to be understood as meaning perfection: that is, that "Free-will" can, indeed, will and begin, but cannot perfect: which I do not believe: and upon this I shall speak more at large hereafter.
It now then follows, that Free-will is plainly a divine term, and can be applicable to none but the divine Majesty only: for He alone "doth, (as the Psalm sings) what He will in Heaven and earth." (Ps. cxxxv. 6.) Whereas, if it be ascribed unto men, it is not more properly ascribed, than the divinity of God Himself would be ascribed unto them: which would be the greatest of all sacrilege. Wherefore, it becomes Theologians to refrain from the use of this term altogether, whenever they wish to speak of human ability, and to leave it to be applied to God only. And moreover, to take this same term out of the mouths and speech of men; and thus to assert, as it were, for their God, that which belongs to His own sacred and holy Name.[/i]
-From The Bondage of The Will by Luther
Basically this is asking, if man needs even the smallest amount of grace from God to believe, then how can he say he is free to do something.
The lack of logic in the idea of God being so sovereign that He allowed men to have free will is ludicrous to say the least.
If God is omnipotent, there can be no other equal or more powerful object in existence. There is no way to skirt this issue. You may by going towards an open theism in which God may or may not accomplish all He has planned, or in which man can refuse to work with God.
To do this undermines the flawlessness of prophecy, as man could refuse God and then throw off the whole scope of God's purposes. We know this is not true at all, and that God has sovereignly pre-named people like Cyrus long before they were born, and declared what they were to do.
If one follows this "man is able" ideology long enough, ultimately you end up with only ethics apart from any kind of spirituality at all. Man becomes so focussed upon his doing and working, and so self enamored, he has no need of Christ, he just needs more morals, and more ethics to justify him.