To the very end of his earthly pilgrimage the best instructed Christian has reason to pray "that which I see not teach Thou me" (Job 34:22). Even the theologian and the Bible-teacher is but a learner and, like all his companions in the school of Christ, acquires his knowledge of the Truth gradually–"here a little, there a little" (Isa. 28:10 ). He too advances slowly, as one great theme after another is studied by him and opened up to him, requiring him to revise or correct his earlier apprehensions and adjust his views on other portions of the Truth as fuller light is granted him on any one branch thereof. Necessarily so, for Truth is a unit, and if we err in our understanding of one part of it that affects our perception of other parts of it.