So here we have, in this great champion of the faith, in this strong runner of the Christian race, in this chief of men, an example of the fluctuation of mood, the variation in the way in which we look at our duties and our obligations and our difficulties, the slackening of the impulse which dominates our lives, that are too familiar to us all. It brings Paul nearer us to feel that he, too, knew these ups and downs. The force that drove this meteor through the darkness varied, as the force that impels us varies to our consciousness. It is the prerogative of God to be immutable; men have their moods and their fluctuations. Kindled lights flicker; the sun burns steadily. An Elijah to-day beards Ahab and Jezebel and all their priests, and to-morrow hides his head in his hands, and says, 'Take me away, I am not better than my fathers.' There will be ups and down in the Christian vigour of our lives, as well as in all other regions, so long as men dwell in this material body and are surrounded by their present circumstances.
Brethren, it is no small part of Christian wisdom and prudence to recognise this fact, both in order that it may prevent us from becoming unduly doubtful of ourselves when the ebb tide sets in on our souls, and also in order that we may lay to heart this other truth, that because these moods and changes of aspect and of vigour will come to us, therefore the law of life must be effort, and the duty of every Christian man be to minimise, in so far as possible, the fluctuations which, in some degree, are inevitable. No human hand has ever drawn an absolutely straight line. That is the ideal of the mathematician, but all ours are crooked. But we may indefinitely diminish the magnitude of the curves. No two atoms are so close together as that there is no film between them. No human life has ever been an absolutely continuous, unbroken series of equally holy and devoted thoughts and acts, but we may diminish the intervals between kindred states, and may make our lives so far uniform as that to a bystander they shall look like the bright circle, which a brand whirled round in the air makes the impression of, on the eye that beholds. We shall have times of brightness and of less brilliancy, of vigour and of consequent reaction and exhaustion. But Christianity has, for one of its objects, to help us to master our moods, and to bring us nearer and nearer, by continual growth, to the steadfast, immovable attitude of those whose faith is ever the same.
Do not forget the plain lesson which comes from the incident before us—viz., that the wisest thing that a man can do, when he feels that the wheels of his religious being are driving heavily, is to set himself doggedly to the plain, homely work of daily life. Paul did not sit and bemoan himself because he felt this slackening of impulse, but he went away to Aquila, and said, 'Let us set to work and make camel's-hair cloth and tents.' Be thankful for your homely, prosaic, secular, daily task. You do not know from how many sickly fancies it saves you, and how many breaches in the continuity of your Christian feeling it may bridge over. It takes you away from thinking about yourselves, and sometimes you cannot think about anything less profitably. So stick to your work; and if ever you feel, as Paul did, 'cast down,' be sure that the workshop, the office, the desk, the kitchen will prevent you from being 'destroyed,' if you give yourselves to the plain duties which no moods alter, but which can alter a great many moods.
II. And now note the 'constraining word.'
I have already said that the return of the two, who had been sent to see how things were going with the recent converts in the infant Churches, brought the Apostle good tidings, and so lifted off a great load of anxiety from his heart. No wonder! He had left raw recruits under fire, with no captain, and he might well doubt whether they would keep their ranks. But they did. So the pressure was lifted off, and the pressure being lifted off, spontaneously the old impulse gripped him once more; like a spring which leaps back to its ancient curve when some alien force is taken from it. It must have been a very deep and a very habitual impulse, which thus instantly reasserted itself the moment that the pressure of anxiety was taken out of the way.
The word constrained him. What to do? To declare it. Paul's example brings up two thoughts—that that impulse may vary at times, according to the pressure of circumstances, and may even be held in abeyance for a while; and that if a man is honestly and really a Christian, as soon as the incumbent pressure is taken away, he will feel, 'Necessity is laid upon me; yea, woe is me if I preach not the Gospel.' For though Paul's sphere of work was different from ours, his obligation to work and his impulse to work were such as are, or should be, common to all Christians. The impulse to utter the word that we believe and live by seems to me to be, in its very nature, inseparable from earnest Christian faith. All emotion demands expression; and if a man has never felt that he must let his Christian faith have vent, it is a very bad sign. As certainly as fermentation or effervescence demands outgush, so certainly does emotion demand expression. We all know that. The same impulse that makes a mother bend over her babe with unmeaning words and tokens that seem to unsympathetic onlookers foolish, ought to influence all Christians to speak the Name they love. All conviction demands expression. There may be truths which have so little bearing upon human life that he who perceives them feels little obligation to say anything about them. But these are the exceptions; and the more weighty and the more closely affecting human interests anything that we have learned to believe as truth is, the more do we feel in our hearts that, in making us its believers, it has made us its apostles. Christ's saying, 'What ye hear in the ear, that preach ye on the housetops,' expresses a universal truth which is realised in many regions, and ought to be most emphatically realised in the Christian. For surely of all the truths that men can catch a glimpse of, or grapple to their hearts, or store in their understandings, there are none which bring with them such tremendous consequences, and therefore are of so solemn import to proclaim to all the children of men, as the truth, which we profess we have received, of personal salvation through Jesus Christ.
If there never had been a single commandment to that effect, I know not how the Christian Church or the Christian individual could have abstained from declaring the great and sweet Name to which it and he owe so much. I do not care to present this matter as a commandment, nor to speak now of obligation or responsibility. The impulse is what I would fix your attention upon. It is inseparable from the Christian life. It may vary in force, as we see in the incident before us. It will vary in grip, according as other circumstances and duties insist upon being attended to. The form in which it is yielded to will vary indefinitely in individuals. But if they are Christian people it is always there.
Well then, what about the masses of so-called Christians who feel nothing of any such constraining force? And what about the many who feel enough of it to make them also feel that they are wrong in not yielding to it, but not enough to make their conduct be influenced by it? Brethren, I venture to believe that the measure in which this impulse to speak the word and use direct efforts for somebody's conversion is felt by Christians, is a very fair test of the depth of their own religion. If a vessel is half empty it will not run over. If it is full to the brim, the sparkling treasure will fall on all sides. A weak plant may never push its green leaves above the ground, but a strong one will rise into the light. A spark may be smothered in a heap of brushwood, but a steady flame will burn its way out. If this word has not a grip of you, impelling you to its utterance, I would have you not to be too sure that you have a grip of it.
III. Lastly, we have here the witness to the word.
'He was constrained by the word, testifying.' Now I do not know whether it is imposing too much meaning upon a non-significant difference of expression, if I ask you to note the difference between that phrase and the one which describes his previous activity: 'He reasoned in the synagogue every Sabbath, and tried to persuade' the Jews and the Greeks, but when the old impulse came back in new force, reasoning was far too cold a method, and Paul took to testifying. Whether that be so or no, mark that the witness of one's own personal conviction and experience is the strongest weapon that a Christian can use. I do not despise the place of reasoning, but arguments do not often change opinions; they never change hearts. Logic and controversial discoursing may 'prepare the way of the Lord,' but it is 'in the wilderness.' But when a man calls aloud, 'Come and hear all ye, and I will declare what God hath done for my soul'; or when he tells his brother, 'We have found the Messias'; or when he sticks to 'One thing I know, that whereas I was blind, now I see,' it is difficult for any one to resist, and impossible for any one to answer, that way of testifying,