Take warning this day, that you never will be happy till you are converted. You might as well expect to feel the sun shine on your face when you turn your back to it, as to feel happy when you turn your back on God and on Christ. (2) In the next place, _let me warn all who are not true Christians of the folly of living a life which cannot make them happy_. I pity you from the bottom of my heart, and would fain persuade you to open your eyes and be wise. I stand as a watchman on the tower of the everlasting Gospel. I see you sowing misery for yourselves, and I call upon you to stop and think, before it is too late. Oh, that God may show you your folly! You are hewing out for yourselves cisterns, broken cisterns, which can hold no water. You are spending your time, and strength, and affections on that which will give you no return for your labour,--"spending your money on that which is not bread, and your labour for that which satisfieth not." (Isa. lv. 2.) You are building up Babels of your own contriving, and ignorant that God will pour contempt on your schemes for procuring happiness, because you attempt to be happy without Him. Awake from your dreams, I entreat you, and show yourselves men. Think of the uselessness of living a life which you will be ashamed of when you die, and of having a mere nominal religion, which will just fail you when it is most wanted. Open your eyes and look round the world. Tell me who was ever really happy without God and Christ and the Holy Spirit. Look at the road in which you are travelling. Mark the footsteps of those who have gone before you: see how many have turned away from it, and confessed they were wrong. I warn you plainly, that if you are not a true Christian you will miss happiness in the world that now is, as well as in the world to come. Oh, believe me, the way of happiness, and the way of salvation are one and the same! He that will have his own way, and refuses to serve Christ, will never be really happy. But he that serves Christ has the promise of both lives. He is happy on earth, and will be happier still in heaven. If you are neither happy in this world nor the next, it will be all your own fault. Oh, think of this! Do not be guilty of such enormous folly. Who does not mourn over the folly of the drunkard, the opium eater, and the suicide? But there is no folly like that of the impenitent child of the world. (3) In the next place, _let me entreat all readers of this book, who are not yet happy, to seek happiness where alone it can be found_. The keys of the way to happiness are in the hands of the Lord Jesus Christ. He is sealed and appointed by God the Father, to give the bread of life to them that hunger, and to give the water of life to them that thirst. The door which riches and rank and learning have so often tried to open, and tried in vain, is now ready to open to every humble, praying believer. Oh, if you want to be happy, come to Christ!