"Eternal life is a gift, therefore it can neither be earned by good works, nor claimed as a right. Seeing that salvation is a 'gift,' who has any right to tell God on whom He ought to bestow it? It is not that the Giver ever refuses this gift to any who seek it wholeheartedly, and according to the rules which He has prescribed. No! He refuses none who come to Him empty-handed and in the way of His appointing. But if out of a world of impenitent and unbelieving rebels, God is determined to exercise His sovereign right by choosing a limited number to be saved, who is wronged? Is God obliged to force His gift on those who value it not? Is God compelled to save those who are determined to go their own way?
But nothing more riles the natural man and brings to the surface his innate and inveterate enmity against God than to press upon him the eternality, the freeness, and the absolute sovereignty of Divine grace. That God should have formed His purpose from everlasting, without in anywise consulting the creature, is too abasing for the unbroken heart. That grace cannot be earned or won by any efforts of man is too self-emptying for self-righteous. And that grace singles out whom it pleases to be its favored objects arouses hot protests from haughty rebels. The clay rise up against the Potter and asks, 'Why hast Thou made me thus?' A lawless insurrectionist dares to call into question the justice of Divine sovereignty."
-A.W. Pink, The Attributes of God