From the post No One Believes That The God Of The Bible Exists Anymore at Exploring Our Matrix:
To put it bluntly, classical Christianity is itself now our Old Testament…We have to use traditional Christianity in the same way as Christianity itself has always used the Old Testament. In both cases there is a great gulf but there is also continuity of spirit and religious values…When a Christian sings a psalm he knows there is a religion-gap and a culture-gap, but it does not worry him because he believes his faith to be the legitimate successor of the faith of the psalmist. Similarly, since the Enlightenment there has developed a religion-gap and a culture-gap between us and traditional Christianity, but we may still be justified in using the old words if we can plausibly argue that our present faith and spiritual values are the legitimate heirs of the old” (Don Cupitt, Taking Leave of God, p.135).