As a child, I was taught a song in church, “Give me oil in my lamp, keep me burning; Give me oil in my lamp, I pray. Give me oil in my lamp, keep me burning; Keep me burning till the break of day.” We sung it with enthusiasm, but I had little comprehension as to its meaning. Now, I know. If we do not feed the fire in our soul as preachers, then the flame of love and zeal may dim. Our usefulness then as preachers will diminish also. Spurgeon had much to say about this. Here is an excerpt from the “Prince of Preachers” on that topic.
Even the lamps of the sanctuary needed oil. Feed the flame, my brother, feed it frequently; feed it with holy thought and contemplation, especially with thought about your work, your motives in pursuing it, the design of it, the helps that are waiting for you, and the grand results of it if the Lord be with you. Dwell much upon the love of God to sinners, and the death of Christ on their behalf, and the work of the Spirit upon men's hearts. Think of what must be wrought in men's hearts ere they can be saved.
Remember, you are not sent to whiten tombs, but to open them, and this is a work which no man can perform unless, like the Lord Jesus at the grave of Lazarus, he groans in spirit; and even then he is powerless apart from the Holy Ghost. Meditate with deep solemnity upon the fate of the lost sinner, and, like Abraham, when you get up early to go to the place where you commune with God, cast an eye towards Sodom and see the smoke thereof going up like the smoke of a furnace. Shun all views of future punishment which would make it appear less terrible, and so take off the edge of your anxiety to save immortals from the quenchless flame. If men are indeed only a nobler kind of ape, and expire as the beasts, you may well enough let them die unpitied; but if their creation in the image of God involves immortality, and there is any fear that through their unbelief they will bring upon themselves endless woe, arouse yourselves to the agonies of the occasion, and be ashamed at the bare suspicion of unconcern. Think much also of the bliss of the sinner saved, and like holy Baxter derive rich arguments for earnestness from "the saints' everlasting rest." Go to the heavenly hills and gather fuel there; pile on the glorious logs of the wood of Lebanon, and the fire will burn freely and yield a sweet perfume as each piece of choice cedar glows in the flame. There will be no fear of your being lethargic if you are continually familiar with eternal, realities.
Above all, feed the flame with intimate fellowship with Christ. No man was ever cold in heart who lived with Jesus on such terms as John and Mary did of old, for he makes men's hearts burn within them. I never met with a half-hearted preacher who was much in communion with the Lord Jesus. The zeal of God's house ate up our Lord, and when we come into contact with him it begins to consume us also, and we feel that we cannot but speak the things which we have seen and heard in his company, nor can we help speaking of them with the fervency which comes out of actual acquaintance with them. Those of us who have been preaching for these five-and-twenty years sometimes feel that the same work, the same subject, the same people, and the same pulpit, are together apt to beget a feeling of monotony, and monotony may soon lead on to weariness. But then we call to mind another sameness, which becomes our complete deliverance; there is the same Savior, and we may go to him in the same way as we did at the first, since he is "Jesus Christ the same yesterday, and today, and for ever." In his presence we drink in the new wine and renew our youth. He is the fountain, forever flowing with the cool, refreshing water of life, and in fellowship with him we find our souls quickened into perpetual energy.
Beneath his smile our long-accustomed work is always delightful, and wears a brighter charm than novelty could have conferred. We gather new manna for our people every morning, and as we go to distribute it we feel an anointing of fresh oil distilling upon us. "They that wait upon the Lord shall renew their strength; they shall mount up with wings as eagles; they shall run and not be weary; and they shall walk, and not faint." Newly come from the presence of him that walketh among the golden candlesticks we are ready to write or speak unto the churches in the power which he alone can give. Soldiers of Christ, you can only be worthy of your Captain by abiding in fellowship with him, and listening to his voice as Joshua did when he stood by Jordan, and inquired–"What saith my Lord unto his servant?" Fan the flame as well as feed it. Fan it with much supplication. We cannot be too urgent with one another upon this point: no language can be too vehement with which to implore ministers to pray. There is for our brethren and ourselves an absolute necessity for prayer. Necessity! I hardly like to talk of that, let me rather speak of the deliciousness of prayer–the wondrous sweetness and divine felicity which come to the soul that lives in the atmosphere of prayer. John Fox said, "The time we spend with God in secret is the sweetest time, and the best improved. Therefore, if thou lovest thy life, be in love with prayer." The devout Mr. Hervey resolved on the bed of' sickness–" If God shall spare my life, I will read less and pray more." John Cooke, of Maidenhead, wrote–" The business, the pleasure, the honor, and advantage of prayer press on my spirit with increasing force every day." A deceased pastor when drawing near his end, exclaimed, "I wish I had prayed more;" that wish many of us might utter. There should be special seasons for devotion, and it is well to maintain them with regularity; but the spirit of prayer is even better than the habit of prayer: to pray without ceasing is better than praying at intervals. It will be a happy circumstance if we can frequently bow the knee with devout brethren, and I think it ought to be a rule with us ministers never to separate without a word of prayer. Much more intercession would rise to heaven if we made a point of this, especially those of us who have been fellow-students. If it be possible, let prayer and praise sanctify each meeting of friend with friend. It is a refreshing practice to have a minute or two of supplication in the vestry before preaching if you can call in three or four warm-hearted deacons or other brethren. It always nerves me for the fight. But, for all that, to fan your earnestness to a vehement flame you should seek the spirit of continual prayer, so as to pray in the Holy Ghost, everywhere and always; in the study, in the vestry, and in the pulpit. It is well to be pleading evermore with God, when sitting down in the pulpit, when rising to give out the hymn, when reading the chapter, and while delivering the sermon; holding up one hand to God empty, in order to receive, and with the other hand dispensing to the people what the Lord bestows. Be in preaching like a conduit pipe between the everlasting and infinite supplies of heaven and the all but boundless needs of men, and to do this you must reach heaven, and keep up the communication without a break. Pray for the people while you preach to them; speak with God for them while you are speaking with them for God. Only so can you expect to be continually in earnest. A man does not often rise from his knees unearnest; or, if he does, he had better return to prayer till the sacred flame descends upon his soul. Adam Clarke once said, "Study yourself to death, and then pray yourself alive again": it was a wise sentence. Do not attempt the first without the second; neither dream that the second can be honestly accomplished without the first. Work and pray, as well as watch and pray; but; pray always.
Stir the fire also by frequent attempts at fresh service. Shake yourself out of routine by breaking away from the familiar fields of service and reclaiming virgin soil. I suggest to you, as a subordinate but very useful means of keeping the heart fresh, the frequent addition of new work to your usual engagements. I would say to brethren who are soon going away from the College, to settle in spheres where they will come into contact with but few superior minds, and perhaps will be almost alone in the higher walks of spirituality,–look well to yourselves that you do not become flat, stale, and unprofitable, and keep yourselves sweet by maintaining an enterprising spirit. You will have a good share of work to do and few to help you in it, and the years will grind along heavily; watch against this, and use all means to prevent your becoming dull and sleepy, and among them use that which experience leads me to press upon you. I find it good for myself to have some new work always on hand. The old and usual enterprises must be kept up, but somewhat must be added to them. It should be with us as with the squatters upon our commons, the fence of our garden must roll outward a foot or two, and enclose a little more of the common every year. Never say "it is enough” nor accept the policy of "rest and be thankful." Do all you possibly can, and then do a little more. I do not know by what process the gentleman who advertises that he can make short people taller attempts the task, but I should imagine that if any result could be produced in the direction of adding a cubit to one's stature it would be by every morning reaching up as high as you possibly can on tiptoe, and, having done that, trying day by day to reach a little higher. This is certainly the way to grow mentally and spiritually,–" reaching forth to that which is before." If the old should become just a little stale, add fresh endeavors to it, and the whole mass will be leavened anew. Try it and you will soon discover the virtue of breaking up fresh ground, invading new provinces of the enemy, and scaling fresh heights to set the banner of the Lord thereon. This is, of course, a secondary expedient to those of which we have already spoken, but still it is a very useful one, and may greatly benefit you. In a country town, say of two thousand inhabitants, you will, after a time, feel, "Well, now I have done about all I can in this place."
What then? There is a hamlet some four miles off, set about opening room there. If one hamlet is occupied, make an excursion to another, and spy out the land, and set the relief of its spiritual destitution before you as an ambition. When the first place is supplied, think of a second. It is your duty, it will also be your safeguard. Everybody knows what interest there is in fresh work. A gardener will become weary of his toil unless he is allowed to introduce new flowers into the hothouse, or to cut the beds upon the lawn into a novel shape; all monotonous work is unnatural and wearying to the mind, therefore it is wisdom to give variety to your labor.
Far more weighty is the advice, keep close, to God, and keep close to your fellow men whom you are seeking to bless. Abide under the shadow of the Almighty, dwell where Jesus manifests himself, and live in the power of the Holy Ghost. Your very life lies in this. Whitefield mentions a lad who was so vividly conscious of the presence of God that he would generally walk the roads with his hat off. How I wish we were always in such a mood. It would be no trouble to maintain earnestness then.
Take care, also, to be on most familiar terms with those whose souls are committed to your care. Stand in the stream and fish. Many preachers are utterly ignorant as to how the bulk of the people are living; they are at home among books, but quite at sea among men. What would you think of a botanist who seldom saw real flowers, or an astronomer who never spent a night with the stars? Would they be worthy of the name of men of science Neither can a minister of the gospel be anything but a mere empiric unless he mingles with men, and studies character for himself. "Studies from the life,"–gentlemen, we must have plenty of these if we are to paint to the life in our sermons. Read men as well as books, and love men rather than opinions, or you will be inanimate preachers. (Lectures to My Students, Spurgeon, pp. 314-317, Kindle edition)
I pray for you, servant of the Most High, and seek for myself as I stand under God and before men, “Give us oil in our lamps; Keep us burning!” To the Glory of God, Amen!