First, let it be considered that the faith of a Christian embraces real relations with the living God, different from anything that is possible to unbelief. Through Christ we believe in God. Those relations are conceived to be real and vital from the first, though the perfect experience of all that they imply belongs to the future. Faith means that from the outset of believing we are to be to God, and God is to be to us, something different from what the flesh perceives. Christ believed in is an assurance that so it is and shall be. But now, the state of men is such, as long as they have to carry on a life of faith in a world of sense and sin, that this faith of theirs presently meets with flat contradiction. The course of the world treats it all as null. Sin in their own hearts, and many experiences of life, seem to negative the pretensions and the claims of faith. And strong temptations whisper that this high fellowship with a living God not only does not exist, but that it is not desirable that it should. So that from the outset and all along, faith, if it is not content to be a mere dream, if it will count for a reality, must contend for its life. It must fight, "praying always with all prayer," to make good its ground, and to hold on to its Lord. It is indeed the nature of faith to rest, for it is a trust; not less certainly faith is under necessity to strive, for it is challenged and impeached. It lies therefore in the very nature of the case that, if faith is in earnest in embracing real and progressive salvation, it must find itself drawn into conflict and effort to assert the reality and to experience the progress. The opposition it meets with ensures this. On the other hand, it is the nature of the gospel to set men free for active service. It supplies motives, therefore, for enterprise, diligence, and fidelity; and it provides a goal towards which all shall tend. So men become fellow-labourers with their Lord. And if it is intelligible that the Lord should exert continual care for them, it ought to be intelligible also that they are to be exercised in a continual care for Him; care, that is, for the discharge of the trust which they hold from Him.