Against all this faith held its ground, faith clinging to the unseen Lord. In that faith the Philippians were to stand fast. Not only so; looking on "the faith" as if it were a spiritual personality, striving and striven with, they were to throw their own being and energy into the struggle, that the cause of faith might make head and win fresh victories. The faith is knocking at many doors, is soliciting many minds. But much depends on ardent and energetic Christians, who will throw their personal testimony into the conflict, and who will exert on behalf of the good cause the magic of Christian sympathy and Christian love. So they should be fellow-athletes contending on the side of faith, and in the cause of faith. In our own day a livelier sense has awakened of the obligation lying upon Christians to spend and be spent in their Master's cause, and to be fellow-helpers to the truth. Many voices are raised to enforce the duty. Still, it cannot be doubted that in most cases this aspect of the Christian calling is too languidly conceived and too intermittently put in practice. And many in all the Churches are so little qualified to labour for the faith, or even stand fast in it, that their Christianity is only held up externally by the consent and custom of those about them. At this point and in this connection the Apostle begins to bring forward the exhortation to peace and unity which goes forward into the following chapter. Apparently no steadfastness will, in his view, be "worthy of the gospel," unless this loving unity is added. If there was a common instinct of worldliness and unbelief, giving unity to the influences against which the Philippians had to contend, the operation of a mighty uniting influence was to be expected on the other side, an influence Divine in its origin and energy. The subject is brought forward, one can see, in view of tendencies to disagreement which had appeared at Philippi. But it was a topic on which the Apostle had intensely strong convictions, and he was ever ready to expatiate upon it.