In Revelation we read that John on one occasion wept much at a sight he beheld in heaven. He saw a sealed book; and no one was found that could break the seal and open the book. Abel, that holy man of God, was not worthy to open it. Enoch, who had been translated to heaven without tasting death; Elijah, who had gone up in a chariot of fire; even Moses, that great law-giver; or Isaiah, or any of the prophets--none was found worthy to open the book. As he saw this John wept much. As he wept one touched him, and said: "Weep not; behold, the Lion of the tribe of Judah, the root of David, hath prevailed to open the Book, and to loose the seven seals thereof." When he looked to see who was the Lion of the tribe of Judah, whom did he see! Lo, the Lion was a Lamb! God's Lion is a Lamb! When we are like lambs God can use us, and we are strong in His service. We can all be weak can we not? Then let us lean on the mighty power of God. Notice that all the men whom Christ called around Him were weak men in a worldly sense. They were all men without rank, without title, without position, without wealth or culture. Nearly all of them were fishermen and unlettered men; yet Christ chose them to build up His kingdom. When God wanted to bring the children of Israel out of bondage, He did not send an army; He sent one solitary man. So in all ages God has used the weak things of the world to accomplish His purposes. I read an incident some time ago that illustrates the power of a simple tract. A society was some years ago established to distribute tracts by mail in the higher circles. One of these tracts, entitled, "Prepare to meet thy God," was enclosed in an envelope, and sent by post to a gentleman well known for his ungodly life and his reckless impiety. He was in his study when he read this letter among others. "What's that," said he. "'Prepare to meet thy God.' Who has had the impudence to send me this cant?" And, with an imprecation on his unknown correspondent, he arose to put the paper in the fire. "No; I won't do that." he said to himself; "On second thoughts, I know what I will do. I'll send it to my friend B--; it will be a good joke to hear what he'll say about it." So saying, he enclosed the tract in a fresh envelope, and, in a feigned hand, directed it to his boon companion.