One of the central claims of most religious people (especially those in the Judeo-Christian tradition) is that morality is based upon religion or, more specifically, on a belief in God. A morality which is not God-centred not only cannot provide a genuine basis for moral beliefs but is really and truly groundless. For without a belief in the sovereignty of God, there can be no genuine adequate foundation for moral beliefs. In his recent book, Ethics Without God, Kai Nielsen claims that this view is grossly mistaken. According to Nielsen, morality cannot be based on religion because moral claims cannot be derived from religious (non-moral) cosmological claims such as ‘God is Creator’, or ‘God exists’. ‘God wills X’, ‘God commands X’, do not entail ‘X ought to be done’, or ‘I ought to do X’. It is perfectly in order for someone to say that God wills (commands) X, but is X good? It is also perfectly in order for someone to say that God commands me to do X, but why should I obey God? Surely it cannot be because God is powerful and, if I do not obey his commands, he will punish me. It may be prudent and expedient to obey God because I am afraid of punishment, but this is surely not a morally good reason for obeying him. Moral obligations follow God's commands only if it is assumed that God is morally perfect or that he is good or that his commands are right (p. 5). But I cannot know that God is good without an understanding of what it is for something to be good. To be sure, ‘God is good’, is a truth of language, but in order to understand it we must have a prior understanding of goodness- an understanding which is ‘logically prior to, and independent of, any understanding or acknowledgement of God’ (p. 11). Moreover, Nielsen argues, the religious quest is a quest to find a being that is ‘worthy of worship’, but it is by our own moral insight that we decide that any being, any Z, is ‘worthy of worship’. The decision that there is a Z such that Z is worthy of worship is a moral judgment which is in no way dependent upon the will of God. But more than this, ‘God’, in ‘God is worthy of worship’, is, in most cases, used analytically so that anyone who is brought to say ‘My God’, or ‘My Lord and my God’, is using ‘God’ evaluatively and by implication making a moral judgment - a moral judgment which is logically prior to the will or command of God. This leads Nielsen to conclude: