Bush's Call(s) from God

I saw a BBC story mentioned today on a few chat sites that I follow, and wanted to comment, but didn't have time. The story is that a Palestinian negotiator claims Bush told him in 2003 that he (Bush) was driven to act by "God telling him" to do various things. The claim seems quite credible to me, and I enjoyed Gus Van Horn's commentary on it, however it appears that the White House is denying the claim.