Summary: This paper tries to study the contribution of MacIntyre to Philosophical Theology throughout the analysis of problem of evil in the papers from 1955 to 1959. It tries to study the context of discussion (Mackie, Flew) and the arguments of MacIntyre, which concludes with an affirmation of fideism in Christianity, quite close to Bultmann. Key-words: MacIntyre, Mackie, Flew, Philosophical Theology, evil.