Gary did mention in his
Q&A thread that he felt "As a Christian, playing with actual religion is quite beyond the pale."
And:
"The short answer is that as a Christian I have stayed away from Judeo-Christian theology. Thus the use of Theophysical in Hindu spirit entities." When talking about planetars and solars and devas as angelic-like beings for D&D.
And:
"As a Christian I stayed well away from basing any of the D&D game on scripture.
The Deva, Solarm and Planatar are benign and rather angelic in their purposes.
No Milton, but I did use a bit of Dante's
Inferno is developing the denizens of the Nine Hells."