A healthy Christian is one of the liveliest creatures on earth. When he is at work you may hear him sing. He cannot help it; do not blame him for a little noise. Let him sing, and laugh till he cries. Sometimes he cannot help it; he will burst if his soul may not have vent. When he begins to talk about his Lord his eyes flash fire. Some people hint that he is out of his mind; but those who know best assure us that he was never before so sane as now. Of course, the world thinks religion is such poor stuff that nobody could grow excited about it. To my mind, cold religion is the nastiest dish ever brought to table. True godliness is served up hot. Newness of life means a soul aglow with love to God, and therefore earnest, zealous, happy. Let the believing man have space for his larger life, swing for his grander joy. Nay, do not gag him; let him sing his new song. If any man out of heaven has a right to be happy, it is the man who lives in newness of life. Come, beloved, I want you to go home to-day with the resolve that the newness of life shall be more apparent in your walk. Do not live the old life over again. Why should you? What good would come of it?
— Charles Spurgeon, "Christ's Resurrection and Our Newness of Life"