There is a marvelous medicinal power in joy. Most medicines are distasteful; but this, which is the best of all medicines, is sweet to the taste, and comforting to the heart. We noticed, in our reading, that there had been a little tiff between two sisters in the church at Philippi;””I am glad that we do not know what the quarrel was about; I am usually thankful for ignorance on such subjects;””but, as a cure for disagreements, the apostle says, “Rejoice in the Lord alway.” People who are very happy, especially those who are very happy in the Lord, are not apt either to give offence or to take offence. Their minds are so sweetly occupied with higher things, that they are not easily distracted by the little troubles which naturally arise among such imperfect creatures as we are. Joy in the Lord is the cure for all discord. Should it not be so? What is this joy but the concord of the soul, the accord of the heart, with the joy of heaven? Joy in the Lord, then, drives away the discords of earth.
Further, brethren, notice that the apostle, after he had said, “Rejoice in the Lord alway,” commanded the Philippians to be careful for nothing, thus implying that joy in the Lord is one of the best preparations for the trials of this life. The cure for care is joy in the Lord. No, my brother, you will not be able to keep on with your fretfulness; no, my sister, you will not be able to weary yourself any longer with your anxieties, if the Lord will but fill you with his joy. Then, being satisfied with your God, yea, more than satisfied, overflowing with delight in him, you will say to yourself, “Why art thou cast down, O my soul? And why art thou disquieted in me? Hope thou in God: for I shall yet praise him for the help of his countenance.” What is there on earth that is worth fretting for even for five minutes? If one could gain an imperial crown by a day of care, it would be too great an expense for a thing which would bring more care with it. Therefore, let us be thankful, let us be joyful in the Lord. I count it one of the wisest things that, by rejoicing in the Lord, we commence our heaven here below. It is possible so to do, it is profitable so to do, and we are commanded so to do.
Now I come to the text itself, “Rejoice in the Lord alway: and again I say, Rejoice.”
It will be our first business at this time to consider THE GRACE COMMANDED, this grace of joy; “Rejoice in the Lord,” says the apostle.In the first place, this is a very delightful thing. What a gracious God we serve, who makes delight to be a duty, and who commands us to rejoice! Should we not at once be obedient to such a command as this? It is intended that we should be happy. That is the meaning of the precept, that we should be cheerful; more than that, that we should be thankful; more than that, that we should rejoice. I think this word “rejoice” is almost a French word; it is not only joy, but it is joy over again, re-joice. You know re usually signifies the reduplication of a thing, the taking it over again. We are to joy, and then we are to re-joy. We are to chew the cud of delight; we are to roll the dainty morsel under our tongue till we get the very essence out of it. “Rejoice.” Joy is a delightful thing. You cannot be too happy, brother. Nay, do not suspect yourself of being wrong because you are full of delight. You know it is said of the divine wisdom, “Her ways are ways of pleasantness, and all her paths are peace.” Provided that it is joy in the Lord, you cannot have too much of it. The fly is drowned in the honey, or the sweet syrup into which he plunges himself; but this heavenly syrup of delight will not drown your soul, or intoxicate your heart. It will do you good, and not evil, all the days of your life. God never commanded us to do a thing that would really harm us; and when he bids us rejoice, we may be sure that this is a delightful as it is safe, and as safe as it is delightful. Come, brothers and sisters, I am inviting you now to no distasteful duty when, in the name of my Master, I say to you, as Paul said to the Philippians under the teaching of the Holy Spirit, “Rejoice in the Lord alway: and again I say, Rejoice.”
–C.H. Spurgeon (1834 ”“ 1892)