I pray pretty regularly.  No I don't envision a white man with long beard.    I also don't find a need to pray on street corners or in schools.    I tell you this because I'm a bit worn by the stereotyping of Christians.     It's a diverse group, much more than those who haven't done more than take cursury interest, or see all Christains through the lense of what they see/hear on evangelistic media stations.

I hope you cut some slack to the meditative types who do not moralize or evangelize to those that aren't interested in the experience.   The bible is a human  document no matter how 'inspired' in may be in the eye's of Constitine as he sought to canonize a common document.  His was  a political motive not holy.

http://www.deism.com/bibleorigins.htm