No one has yet to define theology!! Wonder why! 

Theology
  1. The study of the nature of God and religious truth; rational inquiry into religious questions.
  2. A system or school of opinions concerning God and religious questions.Protestant theology; Jewish theology.
  3. A course of specialized religious study usually at a college or seminary.

“It is a necessary basic assumption of biblical interpretation that attention to the plain meaning of the text is the door to healthy understanding of the Bible.” (Paul S.Karleen Ph.D.)