Free will in antiquity
In Plato's Gorgias (and in the Protagoras 345c4-e6), Socrates argues that no one does wrong willingly, one of the most famous doctrines to be associated with him. When framed in modern (Western) terms, the implication is that it is ignorance, rather that free individual agency, that is responsible for morally wrong actions.
Free will in theology
Although our wills are a function of and are in bondage to our inherited sinful desires, Luther insisted that we sin “voluntarily.” Voluntarily means that we sin of our own free will. We will to do what we desire. As long as we desire sin, our wills are only free for sin. This is Luther's “bondage of the will” to sin. The sinner's “will is bound, but it is and remains "his" will. He repeatedly and voluntarily acts according to it.” So it is, to be set free from sin and for righteousness requires a “rebirth through faith.” A rebirth of faith gives “true freedom from sin,” which is, wrote Luther, "a liberty [freedom] to do good.”