Without conversion of heart we cannot serve God on earth. We have naturally neither faith, nor fear, nor love, toward God and His Son Jesus Christ. We have no delight in His Word. We take no pleasure in prayer or communion with Him. We have no enjoyment in His ordinances, His house, His people, or His day. We may have a form of Christianity, and keep up a round of ceremonies and religious performances. But without conversion we have no more heart in our religion than a brick or a stone. Can a dead corpse serve God? We know it cannot. Well, without conversion we are dead toward God. Look round the congregation with which you worship every Sunday. Mark how little interest the great majority of them take in what is going on. Observe how listless, and apathetic, and indifferent, they evidently are about the whole affair. It is clear their hearts are not there! They are thinking of something else, and not of religion. They are thinking of business, or money, or pleasure, or worldly plans, or bonnets, or gowns, or new dresses, or amusements. Their bodies are there, but not their hearts. And what is the reason? What is it they all need? They need conversion. Without it they only come to church for fashion and form’s sake, and go away from church to serve the world or their sins. But this is not all. Without conversion of heart we could not enjoy heaven, if we got there. Heaven is a place where holiness reigns supreme, and sin and the world have no place at all. The company will all be holy; the employments will all be holy; it will be an eternal Sunday. Surely if we go to heaven, we must have a heart in tune and able to enjoy it, or else we shall not be happy. We must have a nature in harmony with the element we live in, and the place where we dwell. Can a fish be happy out of water? We know it cannot. Well, without conversion of heart we could not be happy in heaven.Look round the neighborhood in which you live and the persons with whom you are acquainted. Think what many of them would do if they were cut off for ever from money, and business, and newspapers, and cards, and balls, and races, and hunting, and shopping, and worldly amusements! Would they like it? Think what they would feel if they were shut up forever with Jesus Christ, and saints, and angels! Would they be happy? Would the eternal company of Moses, and David, and St. Paul be pleasant to those who never take the trouble to read what those holy men wrote? Would heaven’s everlasting praise suit the taste of those who can hardly spare a few minutes in a week for private religion, even for prayer? There is but one answer to be given to all these questions. We must be converted before we can enjoy heaven. Heaven would be no heaven to any child of Adam without conversion.Let no man deceive us. There are two things which are of absolute necessity to the salvation of every man and woman on earth. One of them is the mediatorial work of Christ for us, His atonement, satisfaction, and intercession. The other is the converting work of the Spirit in us, His guiding, renewing, and sanctifying grace. We must have both a title and a heart for heaven. Sacraments are only generally necessary to salvation: a man may be saved without them, like the penitent thief. An interest in Christ and conversion are absolutely necessary: without them no one can possibly be saved. All, all alike, high or low, rich or poor, old or young, gentle or simple, churchmen or dissenters, baptized or unbaptized, all must be converted or perish.
For me, trees have always been the most penetrating preachers. I revere them when they live in tribes and families, in forests and groves. And even more I revere them when they stand alone. They are like lonely persons. Not like hermits who have stolen away out of some weakness, but like great, solitary men, like Beethoven and Nietzsche. In their highest boughs the world rustles, their roots rest in infinity; but they do not lose themselves there, they struggle with all the force of their lives for one thing only: to fulfil themselves according to their own laws, to build up their own form, to represent themselves. Nothing is holier, nothing is more exemplary than a beautiful, strong tree. When a tree is cut down and reveals its naked death-wound to the sun, one can read its whole history in the luminous, inscribed disk of its trunk: in the rings of its years, its scars, all the struggle, all the suffering, all the sickness, all the happiness and prosperity stand truly written, the narrow years and the luxurious years, the attacks withstood, the storms endured. And every young farmboy knows that the hardest and noblest wood has the narrowest rings, that high on the mountains and in continuing danger the most indestructible, the strongest, the ideal trees grow. Trees are sanctuaries. Whoever knows how to speak to them, whoever knows how to listen to them, can learn the truth. They do not preach learning and precepts, they preach, undeterred by particulars, the ancient law of life. A tree says: A kernel is hidden in me, a spark, a thought, I am life from eternal life. The attempt and the risk that the eternal mother took with me is unique, unique the form and veins of my skin, unique the smallest play of leaves in my branches and the smallest scar on my bark. I was made to form and reveal the eternal in my smallest special detail. A tree says: My strength is trust. I know nothing about my fathers, I know nothing about the thousand children that every year spring out of me. I live out the secret of my seed to the very end, and I care for nothing else. I trust that God is in me. I trust that my labor is holy. Out of this trust I live. When we are stricken and cannot bear our lives any longer, then a tree has something to say to us: Be still! Be still! Look at me! Life is not easy, life is not difficult. Those are childish thoughts. Let God speak within you, and your thoughts will grow silent. You are anxious because your path leads away from mother and home. But every step and every day lead you back again to the mother. Home is neither here nor there. Home is within you, or home is nowhere at all. A longing to wander tears my heart when I hear trees rustling in the wind at evening. If one listens to them silently for a long time, this longing reveals its kernel, its meaning. It is not so much a matter of escaping from one's suffering, though it may seem to be so. It is a longing for home, for a memory of the mother, for new metaphors for life. It leads home. Every path leads homeward, every step is birth, every step is death, every grave is mother. So the tree rustles in the evening, when we stand uneasy before our own childish thoughts: Trees have long thoughts, long-breathing and restful, just as they have longer lives than ours. They are wiser than we are, as long as we do not listen to them. But when we have learned how to listen to trees, then the brevity and the quickness and the childlike hastiness of our thoughts achieve an incomparable joy. Whoever has learned how to listen to trees no longer wants to be a tree. He wants to be nothing except what he is. That is home. That is happiness.
My friends, I do not believe it is preaching Christ and him crucified, to give people a batch of philosophy every Sunday morning and evening, and neglect the truths of this Holy Book. I do not believe it is preaching Christ and him crucified, to leave out the main cardinal doctrines of the Word of God, and preach a religion which is all a mist and a haze, without any definite truths whatever. I take it that man does not preach Christ and him crucified, who can get through a sermon without mentioning Christ's name once; nor does that man preach Christ and him crucified, who leaves out the Holy Spirit's work, who never says a word about the Holy Ghost, so that indeed the hearers might say, "We do not so much as know whether there be a Holy Ghost." And I have my own private opinion, that there is no such thing as preaching Christ and him crucified, unless you preach what now-a-days is called Calvinism. I have my own ideas, and those I always state boldly. It is a nickname to call it Calvinism. Calvinism is the gospel, and nothing else. I do not believe we can preach the gospel, if we do not preach justification by faith without works; not unless we preach the sovereignty of God in his dispensation of grace; nor unless we exalt the electing, unchangeable, eternal, immutable, conquering love of Jehovah; nor, I think, can we preach the gospel, unless we base it upon the peculiar redemption which Christ made for his elect and chosen people; nor can I comprehend a gospel which lets saints fall away after they are called, and suffers the children of God to be burned in the fires of damnation, after having believed. Such a gospel I abhor. The gospel of the Bible is not such a gospel as that. We preach Christ and him crucified in a different fashion, and to all gainsayers we reply, "We have not so learned Christ.