None of this garnering of evidence, however, in a highly successful method of demonstrating the compelling credibility of the Bible and the central Christian doctrines in any way diminishes the necessity of the work of the Spirit in bringing a person to an indestructible experience of faith. Christian faith involves both Word and Spirit. Graham did not, however, take the time or the opportunity to answer in that way, but found the appeal to personal experience more satisfactory, and perhaps compelling, in the situation.