I have not time, at this stage of my sermon, to do more than just glance at these. We find, for instance, that a very large portion of the joy which he declares fills his own heart, and which he commends to these Philippians, arises from the recognition of good in others. He speaks to them of being his 'joy and crown.' He tells them that in his sorrows and imprisonment, their 'fellowship in the Gospel, from the first day until now,' had brought a whiff of gladness into the close air of the prison cell. He begs them to be Christlike in order that they may 'fulfil his joy'; and he may lose himself in others' blessings, and therein find gladness. A large portion of his joy came from very common things. A large portion of the joy that he commends to them he contemplates as coming to them from small matters. They were to be glad because Timothy came with a message from the Apostle. He is glad because he hears of their well-being, and receives a little contribution from them for his daily necessities. A large portion of his gladness came from the spread of Christ's kingdom. 'Christ is preached,' says he, with a flash of triumph, 'and I therein do rejoice; yea, and will rejoice.' And, most beautiful of all, no small portion of his gladness came from the prospect of martyrdom. 'If I be offered upon the sacrifice and service of your faith, I joy, and rejoice with you all; and do ye joy and rejoice with me.'
Now, put all these things together and they just come to this, that a heart in union with Jesus Christ can find streams in the desert, joys blossoming as the rose, in places that to the un-Christlike eye are wilderness and solitary, and out of common things it can bring the purest gladness and draw a tribute and revenue of blessedness even from the prospect of God-sent sorrows. Dear brethren, if you and I have not learned the secret of modest and unselfish delights, we shall vainly seek for joy in the vulgar excitements and coarse titillations of appetites and desires which the world offers. 'Calm pleasures there abide' in Christ. The northern lights are weird and bright, but they belong to midwinter, and they come from electric disturbances, and portend rough weather afterwards. Sunshine is silent, steadfast, pure. Better to walk in that light than to be led astray by fantastic and perishable splendours. 'Rejoice in the Lord always.'
III. Lastly, such gladness is an important part of Christian duty.
As I have said, the urgency of the command indicates both its importance and its difficulty. It is important that professing Christians should be glad Christians (with the joy that is drawn from Jesus Christ, of course, I mean), because they thereby become walking advertisements and living witnesses for Him. A gloomy, melancholy, professing Christian is a poor recommendation of his faith. If you want to 'adorn the doctrine of Christ' you will do it a great deal more by a bright face, that speaks of a calm heart, calm because filled with Christ, than by many more ambitious efforts. This gladness is important because, without it, there will be little good work done, and little progress made. It is important, surely, for ourselves, for it can be no small matter that we should be able to have travelling with us all through the desert that mystical rock which follows with its streams of water, and ever provides for us the joys that we need. In every aspect, whether as regards men who take their notions of Christ and of Christianity, a great deal more from the concrete examples of both in human lives than from books and sermons, or from the Bible itself--or as regards the work which we have to do, or as regards our own inward life, it is all-important that we should have that close union with Jesus Christ which cannot but result in pure and holy gladness.