The Collaborative International Dictionary of English v.0.48:

Theologize \The*ol"o*gize\, v. t. [imp. & p. p. Theologized;
   p. pr. & vb. n. Theologizing.] [Cf. F. th['e]ologiser.]
   To render theological; to apply to divinity; to reduce to a
   system of theology.
   [1913 Webster]

         School divinity was but Aristotle's philosophy
         theologized.                             --Glanvill.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Theologize \The*ol"o*gize\, v. i.
   To frame a system of theology; to theorize or speculate upon
   theological subjects.
   [1913 Webster]

WordNet (r) 3.0 (2006):

theologize
    v 1: treat from a theological viewpoint or render theological in
         character [syn: theologize, theologise]
    2: make theoretical speculations about theology or discuss
       theological subjects [syn: theologize, theologise]