The Christian religion stands or falls on the truth of our knowledge of God…

The Christian religion stands or falls on the truth of our knowledge of God; if God cannot be known, if God is not known, then religion itself collapses. Thus, Christian theology depends for its very existence on the assured conviction that God can be known, that he has revealed himself to humanity and that we can speak about that knowledge in an orderly manner.
Herman Bavinck (1854-1921)

Scripture and Church: Foundation and Guardian

Scripture is the foundation of the Church; the Church is the guardian of Scripture. When the Church is in strong health, the light of Scripture shines bright; when the Church is sick, Scripture is corroded by neglect; and thus it happens, that the outward form of Scripture and that of the Church, usually seem to exhibit simultaneously either health or sickness; and that as a rule the way in which Scripture is being treated is in exact correspondence with the condition of the Church.
Johann Albrecht Bengel

Take away the Word and no faith will then remain

There is a permanent relationship between faith and the Word. He could not separate one from the other any more than we could separate the rays from the sun from which they come… If faith turns away even in the slightest degree from this goal toward which it should aim, it does no keep its own nature, but becomes uncertain credulity and vague error of mind. The same Word is the basis whereby faith is supported and sustained; if it turns away from the Word, it falls. Therefore, take away the Word and no faith will then remain.
John Calvin, Institutes of the Christian Religion, Book IV, chapter 2

Luther on Learning Biblical Languages

Languages are the sheath in which hides the Sword of the Spirit – so although the faith of the gospel may be proclaimed by a preacher without the knowledge of the languages, the preaching will be feeble and ineffective. But where the languages are studied, the proclamation will be fresh and powerful, the Scripture will be searched, and a faith will be constantly rediscovered through ever new words and deeds.
Fred W. Meuser, Luther the Preacher, (Minneapolis: Ausberg, 1983).

Andrew Fuller on the Importance of Biblical Theology

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 must for the worse; and if all truth relating to one subject were to be found in only 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.

Andrew Fuller, The Complete Works of Andrew Fuller, 539-40