He paused a moment, and with a very serious, thoughtful look, placing his hand on his bosom, he said, "It is _something here_;" and then, raising his eyes to heaven, added, "_and something up yonder_." This poor boy had been taking lessons from "the Great Teacher," and he had taught him some of the most important things that we can ever learn. Jesus may well be called "the Great Teacher," because of his great knowledge. _But there is one other thing that Jesus has, which helps to make him "the Great Teacher," and that is_--GREAT POWER. Other teachers can tell us what we ought to learn, and to do, yet they have no power to help us learn, or do what they teach. But Jesus _has_ this power. Let us take a single illustration from many of the same kind that occurred while he was on earth. One day he was going about teaching in the streets of Jerusalem. As he went on, he passed by the office of a man who was gathering taxes for the Roman government. The persons who did this were called _publicans_. This man, sitting in his office, was named Matthew. He was busily engaged in receiving the taxes of the people. It was a very profitable business. The men engaged in it generally made a great deal of money. Jesus stopped before the window or door of this office. He beckoned to Matthew, and simply spoke these two words:--"_Follow me_." Now, if any other teacher had spoken these words to Matthew, and had tried to make him quit his business and engage in something else, he would have said: "No; I can't leave my office. This is all the means I have of getting a living. The business pays well, and I am not willing to give it up." But when Jesus spoke to him, he did, at once, what he was told to do. We read that "He left all, rose up, and followed him." Matt. ix: 9; Luke v: 28. He became one of the twelve apostles and wrote the gospel which bears his name. But it was the great power which Jesus has over the hearts of men that made Matthew willing to do, at once, what he was told to do. And the power which Jesus exercised over Matthew, in this case, he still has, and still uses. And when he is pleased to use this power the very worst people feel it, and are made good by it. And Jesus, "the Great Teacher," uses this power sometimes in connection with very simple things. Here is an illustration. We may call it: