decalogist

Noun

 * 1) One who explains the Decalogue.
 * 2) * 1649', John Gurgany, "a short Account of the Author's Life and Death", in Gregorii Posthuma : or certain learned Tracts: written by John Gregorie
 * Mr. Dod the Decalogist; whose society, and Directions for the Hebrew Tongue, he enjoyed one Vacation near Banbury