First, then, I see here an example of the danger of a superficial familiarity with Christian truth.
As I said, Agrippa knew, in a general way, a good deal not only about the prophets and the Jewish religion, but of the outstanding facts of the death and Resurrection of Jesus Christ. Paul's assumption that he knew would have been very quickly repudiated if it had not been based upon fact. And the inference from his acceptance without contradiction of the Apostle's statement is confirmed by his use of the word Christian,' which had by no means come into general employment when he spoke; and in itself indicates that he knew a good deal about the people who were so named. Mark the contrast, for instance, between him and the bluff Roman official at his side. To Festus, Paul's talking about a dead man's having risen, and a risen Jew becoming a light to all nations, was such utter nonsense that, with characteristic Roman contempt for men with ideas, he breaks in, with his rough, strident voice, Much learning has made thee mad.' There was not much chance of that cause producing that effect on Festus. But he was apparently utterly bewildered at this entirely novel and unintelligible sort of talk. Agrippa, on the other hand, knows all about the Resurrection; has heard that there was such a thing, and has a general rough notion of what Paul believed as a Christian.
And was he any better for it? No; he was a great deal worse. It took the edge off a good deal of his curiosity. It made him fancy that he knew beforehand all that the Apostle had to say. It stood in the way of his apprehending the truths which he thought that he understood.
And although the world knows a great deal more about Jesus Christ and the Gospel than he did, the very same thing is true about hundreds and thousands of people who have all their lives long been brought into contact with Christianity. Superficial knowledge is the worst enemy of accurate knowledge, for the first condition of knowing a thing is to know that we do not know it. And so there are a great many of us who, having picked up since childhood vague and partially inaccurate notions about Christ and His Gospel and what He has done, are so satisfied on the strength of these that we know all about it, that we listen to preaching about it with a very languid attention. The ground in our minds is preoccupied with our own vague and imperfect apprehensions. I believe that there is nothing that stands more in the way of hundreds of people coming into real intelligent contact with Gospel truth than the half knowledge that they have had of it ever since they were children. You fancy that you know all that I can tell you. Very probably you do. But have you ever taken a firm hold of the plain central facts of Christianity--your own sinfulness and helplessness, your need of a Saviour, the perfect work of Jesus Christ who died on the Cross for you, and the power of simple faith therein to join you to Him, and, if followed by consecration and obedience, to make you partakers of His nature, and heirs of the inheritance that is above? These are but the fundamentals, the outlines of Gospel truth. But far too many of you see them, in such a manner as you see the figures cast upon a screen when the lantern is not rightly focussed, with a blurred outline, and the blurred outline keeps you from seeing the sharp-cut truth as it is in Jesus. In all regions of thought inaccurate knowledge is the worst foe to further understanding, and eminently is this the case in religion. Brethren, some of you are in that position.
Then there is another way in which such knowledge as that of which the king in our text is an example is a hindrance, and that is, that it is knowledge which has no effect on character. What do hundreds of us do with our knowledge of Christianity? Our minds seem built in watertight compartments, and we keep the doors of them shut very close, so that truths in the understanding have no influence on the will. Many of you believe the Gospel intellectually, and it does not make a hairsbreadth of difference to anything that you ever either thought or wished or did. And because you so believe it, it is utterly impossible that it should ever be of any use to you. Agrippa, believest thou the prophets? I know that thou believest.' Yes, believest the prophets, and Bernice sitting by thy side there--believest the prophets, and livest in utter bestial godlessness.' What is the good of a knowledge of Christianity like that? And is it not such knowledge of Christianity that blocks the way with some of you for anything more real and more operative? There is nothing more impotent than a firmly believed and utterly neglected truth. And that is what the Christianity of some of you is when it is analysed.