It is impossible to enumerate the various occasions on which the Scriptures introduce the doctrine of atonement by the death of Christ. This is, to the doctrines and precepts of the Bible, as the life-blood to the animal system. The first chapter of the Epistle to the Ephesians is often resorted to, as treating on evangelical blessings; but there is a design which runs through that whole chapter, nay, almost through the whole Epistle, which is to endear the name of Christ, and to exhibit the invaluable worth of his redeeming love. Are we blessed with all spiritual blessings? It is “in Christ Jesus.” Were we predestinated to the adoption of children? It was “by Jesus Christ.” Are we accepted? It is “in the Beloved.” Have we redemption, even the forgiveness of sins? It is “through his blood.” And so on. Christ crucified is the substance of the Jewish ceremonial, and the spirit of its prophecies; the theme of the Christian ministry on earth, and the song of the blessed above!
It is not very difficult to discern the wisdom of God in introducing truth in such a manner. If every species of plants and flowers were to grow together, instead of the whole being scattered over the earth, the effect would be very different, and much for the worse; and if all truth relating to one subject were to be found only in one book, chapter, or epistle, we should probably understand much less than we do. There are some Divine truths which are less pleasant than others. Even good men have their partialities, or favourite principles, which would induce them to read those parts of Scripture which favoured them, to the neglect of others. But truth being scattered throughout the Scriptures, we are thereby necessitated, if we read at all, to read the whole mind of God; and thus it is that we gradually and insensibly imbibe it, and become assimilated to the same image. The conduct of God in this matter resembles that of a wise physician, who, in prescribing for a child, directs that its medicines be mixed up with its necessary food.
Moreover, Scripture doctrines being introduced in some practical connexion, we learn them in that connexion. The occasions and ends of truth being associated in our minds with the truth itself, the great design of God in giving us a revelation, which is to sanctify our spirits and fit us for every good word and work, is more effectually answered. To one that has learned truth from the Scriptures, and in whom it dwells richly, in all wisdom and spiritual understanding, it is scarcely possible to think of a doctrine but in connexion with its correspondent duties, or of a duty without the principles by which it is enforced.
Fuller, A. G. (1988). The Complete Works of Andrew Fuller: Expositions—Miscellaneous. (J. Belcher, Ed.) (Vol. 3, pp. 539–540). Harrisonburg, VA: Sprinkle Publications.