‘Doing the will of God’, or seeking to do it, is a notion close to the centre of at any rate Christian, Jewish, and Moslem religion. So too is the notion of ‘accepting’ something as God's will: Fiat voluntas tua. In the former case, the notion of ‘doing the will of God’ is invoked in connection with what would be right to do in a practical situation; in the latter in connection with happenings and circumstances outside our control and as something to be accepted rather than accomplished. I shall be concerned here with the notion of the will of God as something to be accomplished, asking what, if anything, to say that an action is in accordance with the will of God adds to saying that it is right. I shall also look at ways in which we think of relations between our wills and those of other people when we say that one person is doing the will of another person, and ask whether these help us at all in trying to see what might be meant by ‘doing the will of God’.