“Theology carries with it a unique mode of existence. Barth and his followers referred to this as a theologische Existenz (theological mode of existence).
This theological mode of existence involves more than acquiring a substantial amount of knowledge, more than doing theology as creatively as possible. It concerns the cultivation of a certain underlying passion.
This passion is, first, a passion for God and His kingdom. As the word indicates, a true theologian speaks about God. But his or her passion also concerns the people of God and the world of God. This dimension will perhaps not radiate from every page the theologian writes. It is a cultivated passion; that is, it lies in the background and will typically surface in a restrained manner.”
C van der Kooi & G. van den Brink Christian Dogmatics: An Introduction p. 29-30