Augustines Grace

In the fifth century, a debate that affected the understanding of grace in Western Christianity, and that was to have long reaching effects on subsequent developments in the doctrine, took place between Pelagius and St Augustine of Hippo.

Pelagius, a British monk, was concerned about the retention of man's moral accountability in the face of God's omnipotence. He strongly affirmed that men had free will and were able to choose good as well as evil. Pelagius denied that original sin had extinguished God's grace in Adam's heirs, and that consequently mankind had the power to do good, to convert themselves from sin by their own power, and the ability to work out their own salvation. Religion's purpose is to teach us virtue, from which we can expect reward from God. By great efforts, it is possible for those in the flesh to achieve moral perfection.

Pelagius's seemingly optimistic creed in fact burdens weak mortals with a burden too great to bear; or at least this was part of the response of St Augustine. More importantly, it does not clearly explain why Jesus Christ had to die for anyone's sins; if men can redeem themselves by their own efforts, atonement by Jesus on the Cross was at best a vague sort of moral example. The taint of original sin in fact did extinguish God's grace in men's souls; no matter how righteously they conducted themselves, their virtues could never make them worthy of the infinite holiness of God. Men are massa peccati, a mess of sin; they can no more endow themselves with grace than an empty glass can fill itself. While we may have "free will" (liberum arbitrium) in the sense that we can choose our course of conduct, we nevertheless lack true freedom (libertas) to avoid sin, for sin is inherent in each choice we make. It is only by God's sovereign choice to extend His grace to us that salvation is possible.

Pelagianism was repudiated by the Council of Carthage in 417, largely at Augustine's insistence. Some still hold to Semi-Pelagianism, which holds that though grace is required for men to save themselves at the beginning, there remains a trace of moral ability within men that is unaffected by original sin.

...