mystery of god from ephesians 3

The mystery was not something unknowable; it was previously hidden but now revealed—that in Christ, all nations are brought into the one people of God.

Karl Barth wrote that, “God is always a mystery. Revelation is always revelation in the full sense of the word or it is not revelation” ( CD  I.8.2). God’s revelation, to Barth, always exists in a dia...