GTJ 1:1 (Spr 1980) p. 74 This is the sphere of our relation to God. God alone is adequate witness to himself.4 The value of self-witness. The revelational axiom of the Christian faith in the witness of Scripture to itself brings a number of implications for apologetics. A true defense of Christianity demands the open communication of self-authenticating Scripture to man. Man must be challenged to study Scripture so that he will be confronted with its witness about God, creation, sin, man, Christ,