theologian

from WordNet (r) 3.0 (2006)

theologian
    n 1: someone who is learned in theology or who speculates about
         theology [syn: {theologian}, {theologist}, {theologizer},
         {theologiser}]

from The Collaborative International Dictionary of English v.0.48

Theologian \The`o*lo"gi*an\, n. [Cf. F. th['e]ologien, L.
   theologus, Gr. ?. See {Theology}.]
   A person well versed in theology; a professor of theology or
   divinity; a divine.
   [1913 Webster]