Hans Urs von Balthasar on truth

the complete concept of truth, which the gospel offers us, consists precisely in [the] living exposition of theory in practice and of knowledge carried into action. “If you continue in my word … you shall know the truth” (John 8:32). […]

From the standpoint of revelation, there is simply no real truth which does not have to be incarnated in an act or in some action, so that the incarnation of Christ is the criterion of all real truth and “walking in the truth” is the way the believer possesses the truth.

from “Theology and Sanctity,” in Explorations in Theology, Vol 1: The Word Made Flesh. (San Francisco: Ignatius Press). 181-182.

P.S. from Victoria S. Harrison

According to von Balthasar, at the heart of Christianity lies Christ’s relationship to God, which is the relationship of a Son to his Father. Thus, to know God as Christ does requires an attitude to God which is one appropriate towards a Father. For von Balthasar, this is properly an attitude of obedience. Consequently, the experience of being in a relationship to God involves displaying obedience to God.

from The Apologetic Value of Human Holiness, (Kluwer, 2000), 10-11.