God conceals Himself in revealing Himself

And, according to Barth, God does this concealing in revealing as he assumes the form of the humanitas Christi.

Some of the most thrilling passages in Church Dogmatics are found in the small print sections. Barth produced these to allow for more technical discussions, allowing the dogmatic presentation itself to stand apart so that non-theologians could read it in a connected way.

On pages 322,323 of the old T&T Clark edition that I am reading, Barth writes about how the humanity of Christ contains one of the hardest problems of Christology. Is the humanity of Christ as such revelation? Barth hints that God's reconciling action is the being of God in Christ. So, for example, His resurrection is not an operation proper to Christ's humanity.

Revealing was not ascribed to Christ's existence in the form of a man as such: "...Jesus did not become revelation to all who met Him but only to a few." This has to be understood as part of Barth's overall understanding of revelation. Any doubts about Barth's view on the humanity of Christ can probably be connected to doubts about his view of revelation.