I. General Revelation: The Objective Self-Disclosure of God in Creation and Providence
"Revelation, as this concept is handed to us by religion and is here still taken in the widest sense, is all action which proceeds from God, in order to bring man and keep him in that peculiar relation to Him which is designated by the name of religion." [Herman Bavinck - Reformed Dogmatics]
"Revelation is never an unconscious emanation, an involuntary shining-through of God in His works; but always a conscious, free, active making Himself known to man." [Herman Bavinck - Reformed Dogmatics]
"Properly speaking, from the standpoint of Scripture all revelation, also that in nature, is supernatural." [Herman Bavinck - Reformed Dogmatics]
"Creation is the first revelation of God, beginning and foundation of all subsequent revelation. The biblical concept of revelation is rooted in that of creation... Through creation God first stepped outward for creatures and revealed himself to creatures. When God creates the world through his Word and makes it living through his Spirit, then therein the basic lines of all subsequent revelations are already drawn." [Herman Bavinck - Reformed Dogmatics]
"First of all, throughout the whole of Scripture a revelatio naturalis is taught to us. God’s revelation began in creation and continues in the preservation and government of all things. He reveals himself in the nature around us; displays therein his eternal power and divinity, and in blessings and judgment proves in turn his goodness and his wrath... He also reveals himself in the history of peoples and persons... He also reveals himself in the heart and conscience of every human being... This revelation of God is general, in itself perceptible and intelligible for every human being. Nature and history are the book of God’s omnipotence and wisdom, of his goodness and righteousness." [Herman Bavinck - Reformed Dogmatics]
"That which may be known of God is manifest in them; for God hath shewed it unto them. For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse: because that when they knew God, they glorified him not as God, neither were thankful." [Charles Hodge - Systematic Theology]
II. The Subjective Capacity: Cognitio Dei Insita (Innate) vs. Cognitio Dei Acquisita (Acquired)
"A distinction is usually made between innate and acquired knowledge of God. This is not a strictly logical distinction, because in the last analysis all human knowledge is acquired... Reformed theology also rejected the doctrine [of innate ideas] in that particular form. And while some of its representatives retained the name 'innate ideas,' but gave it another connotation, others preferred to speak of a cognitio Dei insita (ingrafted or implanted knowledge of God)." [Louis Berkhof - Systematic Theology]
"On the one hand this cognitio Dei insita does not consist in any ideas or formed notions which are present in man at the time of his birth; but on the other hand it is more than a mere capacity which enables man to know God. It denotes a knowledge that necessarily results from the constitution of the human mind, that is inborn only in the sense that it is acquired spontaneously, under the influence of the semen religionis implanted in man by his creation in the image of God, and that is not acquired by the laborious process of reasoning and argumentation. It is a knowledge which man, constituted as he is, acquires of necessity, and as such is distinguished from all knowledge that is conditioned by the will of man." [Louis Berkhof - Systematic Theology]
"Cognitio Dei insita does not mean that the human being immediately, by God himself, is equipped with a sufficient knowledge and no longer has any need of revelation. It does not indicate that he is capable, on his own, of deriving any conscious, clear and true knowledge of God from his own spirit. But it indicates that the human being possesses both the potentia (aptitudo, vis, facultas) and the inclinatio (habitus, disposition), in order in the normal course of development and in the midst of the environment in which God granted him life, of himself and without compulsion, without scientific reasoning and proof, emfutws kai adidaktws, to come to some firm, certain, indubitable knowledge of God." [Herman Bavinck - Reformed Dogmatics]
"The cognitio insita, as soon as it is cognitio and thus not only potentia but actus, has never arisen otherwise than under the influence of the revelation of God in and outside man and is therefore in so far always acquisita." [Herman Bavinck - Reformed Dogmatics]
"Acquired knowledge, on the other hand, is obtained by the study of God’s revelation. It does not arise spontaneously in the human mind, but results from the conscious and sustained pursuit of knowledge. It can be acquired only by the wearisome process of perception and reflection, reasoning and argumentation." [Louis Berkhof - Systematic Theology]
"First, in this, that the cognitio Dei innata was obtained of itself, spontaneously, without effort or coercion, whereas the cognitio Dei acquisita was acquired by reasoning and argument, by reflection and proof along the viae causalitatis, eminentiae and negationis; the former was noetica, the latter dianoetica. And second, from that there also flowed this difference, that the first consisted only in principles and was general and necessary, but the second was more elaborated and developed, yielded more concrete propositions and was therefore also subject to all manner of doubt and contestation." [Herman Bavinck - Reformed Dogmatics]
"The law was engraven upon the heart of man in his creation, and is therefore known to all naturally, although no other revelation were given. 'The Gentiles have the work of the law written in their hearts.' (Rom. 2:15.) The gospel is not known naturally, but is divinely revealed to the Church alone through Christ, the Mediator." [Zacharias Ursinus - Commentary on the Heidelberg Ca]
III. The Insufficiency of General Revelation and the Darkening Power of Sin
"But man was by sin so darkened in his understanding, that he also could not rightly know and understand this revelation. There was therefore a twofold necessity, viz. that God should again include in the special revelation those truths which in themselves are knowable from nature; and that man, in order again to notice God in nature, first had to be illumined by God’s Spirit." [Herman Bavinck - Reformed Dogmatics]
"Since the human mind, through its weakness, was altogether unable to come to God if not aided and upheld by his sacred word, it necessarily followed that all mankind, the Jews excepted, inasmuch as they sought God without the Word, were labouring under vanity and error." [John Calvin - Institutes]
"What is called 'the book of nature' is, in all respects, a book lying open in darkness, till its pages are illuminated and its lessons brought into view, by the light of revelation." [Thomas Ridgley - A Body of Divinity]
"On the insufficiency of general revelation there can hardly be any doubt. In the first place it appears from the fact that this revelation at most provides us with some knowledge of God’s existence and of some of his attributes, such as goodness and righteousness; but it leaves us absolutely unacquainted with the person of Christ, who alone is the way to the Father... General revelation is therefore insufficient for man as a sinner; it knows of no grace and forgiveness; many a time it is even a revelation of wrath, Rom. 1:20. Grace and forgiveness, which must be the essence of religion, is an act of good pleasure, not of nature and necessity... It can instill fear, but no trust and love..." [Herman Bavinck - Reformed Dogmatics]
"The experience of ages proves that the world by wisdom knows not God. The heathen nations, ancient and modern, civilized and savage, have without exception, failed by the light of nature to solve any of the great problems of humanity." [Charles Hodge - Systematic Theology]
IV. The Remedial Necessity of Scripture: The Metaphor of the Glasses
"Therefore, though the effulgence which is presented to every eye, both in the heavens and on the earth, leaves the ingratitude of man without excuse, since God, in order to bring the whole human race under the same condemnation, holds forth to all, without exception, a mirror of his Deity in his works, another and better help must be given to guide us properly to God as a Creator. Not in vain, therefore, has he added the light of his Word in order that he might make himself known unto salvation..." [John Calvin - Institutes]
"For as the aged, or those whose sight is defective, when any books however fair, is set before them, though they perceive that there is something written are scarcely able to make out two consecutive words, but, when aided by glasses, begin to read distinctly, so Scripture, gathering together the impressions of Deity, which, till then, lay confused in our minds, dissipates the darkness, and shows us the true God clearly." [John Calvin - Institutes]
"Calvin incorporated the theol. naturalis into the corpus of Christian dogmatics, and said that Scripture was the spectacles by which the believer beheld God more clearly also in the works of nature, Instit. I. 6, 1." [Herman Bavinck - Reformed Dogmatics]
"But the theologian... draws his knowledge solely and only from the revelatio specialis, i.e. from Holy Scripture. This is his principium unicum. But he does not limit this special revelation to the person of Christ... The whole revelation, which is summarized in Scripture, is a revelatio specialis, which comes to us in Christ... The believer, thus also finds his way rightly in the world with his Christian confession... through that general revelation he feels at home in the world... Precisely as a Christian, through faith, he sees the revelation of God in nature much better and more clearly than he could notice it earlier. The psychical man does not understand the speech of God in nature and history. He searches the entire universe, without finding God. But the Christian, armed with the spectacles of Holy Scripture, sees God in everything and everything in God." [Herman Bavinck - Reformed Dogmatics]
V. Special Revelation: The Organic System of Redeeming Words and Deeds
"The revelation, which Scripture makes known to us, does not consist in a few disconnected words and facts, but is one historical and organic whole, a mighty world-governing and world-renewing system of acts of God. It appears, as we saw, in three forms, theophany, prophecy, and miracle... The revelatio specialis is God’s seeking of and God’s coming to man. He must now so reveal himself and so speak and so work, that man is again renewed after his image. Therefore God comes to man in a human way. The incarnation is the central fact in the revelatio specialis, which spreads light over its whole domain. The special revelation of God enters into history, and forms a history, which runs through the centuries." [Herman Bavinck - Reformed Dogmatics]
"The subject of the special revelation is in the proper sense the Logos, the Malak Jhvh, the Christ. He is the mediator of creation... but also of re-creation... Through theophany, prophecy, and miracle he prepares his coming in the flesh. The O. Test. revelation is the history of the coming Christ. Theophany, prophecy, and miracle run out upon him. In Christ they fall together. He is the revelation, the word, the power of God. He shows us the Father, declares to us his name, accomplishes his work. The incarnation is the conclusion, the goal and the end both of Israel’s history, and at the same time the center of all history." [Herman Bavinck - Reformed Dogmatics]
"Revelation according to Scripture is therefore a historical process, an organic system, a continual divine action for the breaking of the power of sin, for the establishment of his kingdom, for the restoration of the cosmos, for ἀνακεφαλαιωσις των παντων ἐν Χριστῳ... Soteriological, therefore, is the whole of revelation... a divine work, a world of thoughts and deeds, an ordo gratiae, which combats and conquers the ordo peccati on every terrain." [Herman Bavinck - Reformed Dogmatics]
"Revelation stands not over against nature, but over against sin. That is the power which revelation seeks to break, but nature it restores and it completes. Creation itself is already revelation. Revelation existed before the fall. Revelation also still exists now in all the works of God’s hands in nature and history. His eternal power and divinity are understood and perceived from the creatures. Analogies of prophecy and miracle also exist outside the revelatio specialis." [Herman Bavinck - Reformed Dogmatics]