Complex sentence: A former Baptist minister, he was the editor of the "Journal of Higher Criticism" from 1994 until it ceased publication in 2003, and has written extensively about the Cthulhu Mythos, a "shared universe" created by the writer H. P. Lovecraft.
Split into simpler sentences: A former Baptist minister, he was the editor of the "Journal of Higher Criticism" from 1994 until it ceased publication in 2003. He has also written extensively about the Cthulhu Mythos, a "shared universe" created by the writer H. P. Lovecraft.