I regard this article as part of a continuing debate in New Blackfriars concerning the relations of Christianity and Marxism. But it is also an attempt, within that context, to ask and answer the question why we should continue to believe in God. I raise the question here because, it seems to me, that most of the effort expended by earlier contributors, particularly Denys Turner has been towards showing that it is possible, and even necessary for a Christian to be a Marxist. Obviously, if a Christian must be a Marxist, as Denys Turner argues, then the question whether he can, or should, continue to believe in God is raised at once. For it is a pretty widely accepted opinion among Marxists that belief in God is incompatible with their own view of things, and that anyone who is a Marxist and believes in God is something of an oddity, a man with a private religious hang-up, and quite probably an unreliable ally. Denys Turner rightly affirms that, in holding to this view of religious belief, Marxists are themselves merely hanging on to a private opinion that has nothing to do with their Marxism as such. But a Christian cannot be content with remaining there. What the Christian needs to be able to show is that, if he ought to be a Marxist just in order to be a complete Christian, it is equally the case that the Marxist ought to be a Christian just in order to be a complete Marxist. Nothing short of this will do, from a Christian standpoint: to pretend otherwise is to connive at a sell-out. I believe that at the present stage of the game there is a real danger of just such a sell-out. For example, to say, as the editorial committee responsible for Crossleft do, that ‘there can be no question today ... of Christian modification of Marxist praxis’ (which, if it means anything, means that being a Christian Marxist makes no difference at all to what, as a Marxist you are prepared to do): or that ‘the Church is basically on the side of the oppressor’ (what else, strictly speaking, can ‘basically’ mean here but ‘from the very foundation’?)—to say things like this suggests to me a readiness for just such a sell-out as I have indicated.