It is my purpose to show in this illustration that God is always placing opportunities within our grasp. In a sense they are bound, for they may be made to do our will if we rightly use them. And it is also my purpose to show that as saint and sinner alike we have permitted opportunities to slip away while we doze in weariness or give attention to matters of less importance. God save us all from the expression, "It might have been," when it is too late, for even God himself cannot reverse the wheels of time and bring back the lost opportunity. We see this all about us. I hold in my hands a piece of cold iron. I cannot bend it; if I put it in the fire it becomes pliant; if I take it out it is cold again. There is a point in time, however, where it is bent as easily as a piece of paper. Years ago our nation sent astronomers to Africa to witness the transit of Venus. Preparation for this great sight had been going on for months. There was a critical moment when the sun, Venus and the earth were all in line. Every astronomer knew that at that moment his eye must be at the smaller end of the glass if he would see the planet go flying past the larger end. If he should miss that moment no power on earth could bring the planet back again. The world is full of these moments. Galileo studied the eye of an ox and beheld the principle of the lens. Watts [Transcriber's note: Watt?] looked at the teakettle lid as it was lifted by steam, Columbus saw the wind's direction and knew there was land not far away. The difference between these men, to whom the world is indebted, and many others is this, that they have looked at the oxen's eyes and have been unmoved, have allowed the teakettle to boil without making an impression upon them, and the wind to blow without leading them to any shore. The opportunity for greatness is gone. There is not a person in the world but to whom at some time a great opportunity has been given, and for the use or abuse of it we shall be called to a strict account. I These opportunities for doing good come to the one who is a Christian. First: I would not preach to others what I did not first preach to myself, but there are many of us as ministers like Chalmers, who was one day visiting an old man seventy-two years of age, apparently in perfect health. They talked together about everything but Christ. The minister was inclined to speak about his soul, but did not. Before morning the old man was dead. Dr. Chalmers returned to the house, called all the old man's household about him, and offered the most touching apology and prayer. He spent the entire day in the woods, saying, "If I had been faithful this might not have been." I have no question but God would say, "So shall thy judgment be."