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The revelation of Jesus is not...
The revelation of Jesus is not contained in his teaching alone; it is also, and perhaps we ought to say mainly, in what he did. The coming of the Word into our flesh, God’s acceptance of the status of servant, the washing of the disciples’ feet—all this has the force of revelation and a evelation of God.
Tradition and Traditions: the Biblical, Historical, and Theological Evidence for Catholic Teaching on Tradition, 2nd ed. Basilica Press, 1998, 348.