"He unveils Himself as the One He is by veiling Himself in a form which He Himself is not. He uses this form distinct from Himself, He uses its work and sign, in order to be objective in, with and under this form, and therefore to give Himself to us to be known. Revelation means the giving of signs. We can say quite simply that revelation means sacrament, i.e., the self-witness of God, the representation of His truth, and therefore of the truth in which He knows Himself, in the form of creaturely objectivity and therefore in a form which is adapted to our creaturely knowledge."