"When we stop to think about it, we find that many things in the world are just like this game. Your life and mine are a great deal like it. Sometimes there is something within us that tells us we are wandering away from God--that tells us we are _growing cold_. And then, if we heed the warning, we hear the same voice saying we are _growing warmer_, and we know it to be true for we feel the assurance that we are nearer to the Master than before. "I am going to draw on the paper this morning a thermometer, and with this thermometer we shall make some tests to see just what it means to be warm Christians or cold ones. [Draw the thermometer, Fig. 66, complete, excepting the liquid in the bulb.] [Illustration: Fig. 66] "Now we are ready to make the test, and we are going to do it by finding out how we spend our Sundays. Why? Because if you can know just how a boy or girl or a man or woman spends the Lord's day, you can tell pretty nearly just what kind of a person that one is in the sight of Jesus Christ. "God gave us this one day for our greatest good. He wants us to use it as a day which shall make us strong and well, bright and happy. If we use it any other way, we are sure to make one of the greatest mistakes of our lives. So certain is God that we must have a day of rest and upbuilding once in each seven days that he made a law concerning it. It is one of the Ten Commandments, which says that we must 'remember the Sabbath day to keep it holy.' God knows best. When He establishes a law, _it must not be broken or the one who breaks it will suffer_. If the child touches fire with his hand, after being warned by his mother not to do it, his suffering is the result of doing what the mother forbade. When God tells us to keep His day holy, every one of us who disobeys that command must suffer. Let us see how it works. Bishop Vincent says: 'Sunday is ill-spent if it sends us back to our weekly work irritated, weary and reluctant'--and Sunday will never do that for us unless we misuse the day which God has given us. If we spend the day in worrying about our everyday affairs, if we spend it in chasing around after senseless amusements which weary the body without enlightening the heart and the mind, if we allow ourselves to follow paths which lead away from truth and right, then we will show up Monday morning irritated, weary and reluctant and our Sunday observance temperature is low indeed. [With red chalk, fill the bulb and a portion of the thermometer tube, completing Fig. 66.]