What is theology?

theo-logos = God-knowledge

It is "the human logic of the divine Logos"

Theology is science [wissenschaft=academic discipline] seeking the knowledge of the Word of God spoken in God's work - science learning in the school of Holy Scripture, which witnesses to the Word of God; science

laboring in the quest for truth, which is inescapably required of the community that is called by the Word of God. In this way alone does theology fulfill its definition as the human logic

of the divine Logos.

Karl Barth, Evangelical Theology: an Introduction

p. 49