for man then it must be adapted to man's receptive condition. If the Bible is truly a "revelation" then it must "reveal"; which is only to say that it must be given in terms or modes of expression adapted or accessible to the human capacity;--it must meet man's condition at the time when the revelation is given as well as his condition a thousand or ten thousand years later; or, in other words, "revelation" must "reveal." Revelation has thus been progressive up to the period of its fulness or up to the cycle of its completion, with an expansive capacity for all future time. Progressive capacity is essential to the conception of a revelation that is universal and final. Borrowing the fine expression of Professor A. B. Bruce, revelation "must take the recipients of benefits along with it, and move at a pace with which they can keep up." Thus, revelation in its methods accords with nature in that it took the form of an historical movement and was subject to the laws of periodic development. "The redemptive purpose of God," declares Professor Bruce, "was not ushered into the world a full-grown fact; it evolved itself by a regular process of growth, and the process was marked by three salient features: slow movement, partial action, and advance from the more or less imperfect, not only in knowledge, but also in morality." And he says, further, "God had to teach Israel to walk in the paths of righteousness like a nurse taking a child by the arms, and had to exercise a nurse-like condescension and patience in connection with the self-imposed task of Israel's moral education, and to become as a child Himself, speaking in broken language and giving laws of a very rude and primitive character adapted to the condition of the pupil."[17]