The promise of activity. There seems small blessing, in this overworked world, in a promise of more active exertion; but what an immense part of our nature lies dormant and torpid if we are not Christians! How much of the work that is done is dreary, wearisome, collar-work, against the grain. Do not the wheels of life often go slowly? Are you not often weary of the inexpressible monotony and fatigue? And do you not go to your work sometimes, though with a fierce feeling of 'need-to-do-it,' yet also with inward repugnance? And are there not great parts of your nature that have never woke into activity at all, and are ill at ease, because there is no field of action provided for them? The mind is like millstones; if you do not put the wheat into them to grind, they will grind each other's faces. So some of us are fretting ourselves to pieces, or are sick of a vague disease, and are morbid and miserable because the highest and noblest parts of our nature have never been brought into exercise. Surely this promise of Christ's should come as a true Gospel to such, offering, as it does, if we will trust ourselves to Him, a springing fountain of activity in our hearts that shall fill our whole being with joyous energy, and make it a delight to live and to work. It will bring to us new powers, new motives; it will set all the wheels of life going at double speed. We shall be quickened by the presence of that mighty power, even as a dim taper is brightened and flames up when plunged into a jar of oxygen. And life will be delightsome in its hardest toil, when it is toil for the sake of, and by the indwelling strength of, that great Lord and Master of our work. And there is not only a promise of activity here, but of activity which is its own law and impulse. That is a blessed promise in two ways. In the first place, law will be changed into delight. We shall not be driven by a commandment standing over us with whip and lash, or coming behind us with spur and goad, but that which we ought to do we shall rejoice to do; and inclination and duty will coincide in all our lives when our life is Christ's life in us. That should be a blessing to some of you who have been fighting against evil and trying to do right with more or less success, more or less interruptedly and at intervals, and have felt the effort to be a burden and a wearisomeness. Here is a promise of emancipation from all that constraint and yoke of bondage which duty discerned and unloved ever lays upon a man's shoulders. When we carry within us the gift of a life drawn from Jesus Christ, and are able to say like Him, 'Lo, I come to do Thy will, and Thy law is within my heart,' only then shall we have peace and joy in our lives. 'The law of the Spirit of life in Christ Jesus makes us free from the law of sin and death.'