There is a great deal more room given in Scripture to the _call_ of men to God's work than there is to their _end_. For instance, we don't know where Isaiah died, or how he died, but we know a great deal about the call God gave him, when he saw God on high and lifted up on His throne. I suppose that it is true to-day that hundreds of young men and women who are listening for a call and really want to know what their life's mission is, perhaps find it the greatest problem they ever had. Some don't know just what profession or work to take up, and so I should like to take the call of Moses, and see if we cannot draw some lessons from it. You remember when God met Moses at the burning bush and called him to do as great a work as any man has ever been called to in this world, that HE THOUGHT THE LORD HAD MADE A MISTAKE, that he was not the man. He said, "Who am I?" He was very small in his own estimation. Forty years before he had started out as a good many others have started. He thought he was pretty well equipped for service. He had been in the schools of the Egyptians, he had been in the palaces of Egypt, he had moved in the _bon ton_ society. He had had all the advantages any man could have when he started out, undoubtedly, without calling on the God of Abraham for wisdom and guidance, yet he broke down. How many men have started out in some profession and made a failure of it! They haven't heard the voice of God, they haven't waited upon God for instruction. I suppose Moses thought that the children of Israel would be greatly honored to know that a prince of the realm was going to take up their cause, but you remember how he lost his temper and killed the Egyptian, and next day, when he interfered in a quarrel between two Hebrews, they wanted to know who had made him judge and ruler over them, and he had to flee into the desert, and was there for forty years hidden away. He killed the Egyptian and lost his influence thereby. Murder for liberty; wrong for right; it was a poor way to reform abuses, and Moses needed training. It was a long time for God to keep him in His school, a long time for a man to wait in the prime of his life, from forty to eighty. Moses had been brought us with all the luxuries that Egypt could give him, and now he was a shepherd, and in the sight of the Egyptians a shepherd was an abomination. I have an idea that Moses started out with a great deal bigger head than heart. I believe that is the reason so many fail; they have BIG HEADS AND LITTLE HEARTS. If a man has a shriveled-up heart and a big head he is a monster. Perhaps Moses looked down on the Hebrews. There are many people who start out with the idea that they are great and other people are small, and they are going to bring them up on the high level with themselves. God never yet used a man of that stamp. Perhaps Moses was a slow scholar in God's school, and so He had to keep him there for forty years.