I. +The import and construction of the Gospel cannot be vague and indeterminate.+--The character of the Gospel was alleged to be its truth. This was, to the sophists of that era, a strange and novel pretension. To require faith to a testimony only so far as conformable to fact, only so far as supported by evidence, appeared to them a startling affectation. In the fixed character we recognise the true perfection of the Gospel. It is the same through all ages, not changing to every touch and varying beneath every eye but unfolding the same features and producing the same effects. Unless there was this invariableness in the Christian system, if a fixed determination of its purport is impossible, we should be at a loss in which manner to follow the conduct and imbibe the spirit of the early Christians. Those lights and examples of the Church would only ensnare us into a mien and attitude ridiculous as profane. It would be the dwarf attempting to bare a giant's arm, a wayfaring man aspiring to a prophet's vision. The truth as it is in Jesus is contained in that Word which is the truth itself; there it is laid up as in a casket and hallowed as in a shrine. No change can pass upon it. It bears the character of its first perfection. Like the manna and the rod in the recess of the Ark, it is the incorruptible bread of heaven, it is the ever-living instrument of might, without an altered form or superseded virtue. II. +Its Divine origin and authority cannot be controverted.+--The history of Saul of Tarsus has often been cited with happy success in confirmation of Christianity. 1. What must have been the strength and satisfaction of conviction entertained by the writer! The conviction has to do with facts. It pertains to no favourite theory, no abstract science, but occurrences which he had proved by sensible observation and perfect consciousness. Wonders had teemed around him; but his own transformation was the most signal wonder of all. Nothing without him could equal what he discerned within. 2. As we estimate the measure and force of his convictions, inquire what weight and credibility should be allowed them. Put his conduct to any rack, his design to any analysis, and then determine whether we are not safe where he is undaunted, whether we may not decide for that on which he perils all, whether the anathema which he dares pronounce does not throw around us the safeguard of a Divine benediction.