https://en.wikipedia.org/wiki/Gene_Wolfe
https://en.wikipedia.org/wiki/R._A._Lafferty
https://en.wikipedia.org/wiki/Cordwainer_Smith
https://en.wikipedia.org/wiki/John_C._Wright_(author)
The best Christian sci-fi authors who write explicitly Christian Sci-fi/fantasy in my experience.
Freegards
Thanks, I’ll look them up!!
Missed CS Lewis. Also Lewis and Tolken debated Christianity,not sure if Tolken accepted Christ.