Abstract

Theism maintains that God is a moralagent. Classical Christian theism also maintains that God is unable tosin. The latter claim is entailed by the proposition that the being whois God is essentially God, and this proposition is one which would beendorsed by all or most classical theologians. It would thus appearthat the claim that God is unable to sin is an important, if notfundamental, part of classical Christian theism. It follows that, at acrucial point, classical Christian theism is incompatible with theassumption that moral agency logically involves the ability to sin -an assumption which is an essential part of the free will defense asthat defense is normally presented. Since (as I suggested earlier) theuse of the free will defense also plays a very important role in clas-sical Christian theism, classical Christian theism would appear toexhibit a major incoherance. While the difficulty can be overcome byemploying a modified version of the free will defense, the modifiedversion is not as attractive as the original