" Grace means that God expresses Himself before man, declaring himself as the truth in his existence. It means that He causes himself to be perceived by this one who is not his equal, who is merely His creature, and who has willfully closed his eyes and ears and heart to him. It means the free revelation of God. This takes place in the life of Jesus Christ. In this life it is a matter of God’s unmerited good-pleasure, of His free grace, and therefore his free word to humanity."[1]
[1] Karl Barth, Church Dogmatics, Vol. IV.3.1 §69. Trans. G.W. Bromiley (London: T&T Clark, 2009), 78