"This knowledge will wean from the world, and raise the inclination to heavenly things. It will turn the heart to God as the fountain of good, and to choose him for the only portion. This light, and this only, will bring the soul to a saving close with Christ. It conforms the heart to the gospel, mortifies its enmity and opposition against the scheme of salvation therein revealed: it causes the heart to embrace the joyful tidings, and entirely to adhere to, and acquiesce in the revelation of Christ as our Saviour: it causes the whole soul to accord and symphonize with it, admitting it with entire credit and respect cleaving to it with full inclination and affection; and it effectually disposes the soul to give up itself entirely to Christ."
Edwards both biblically and rationally lays out the case that the spiritual knowledge and illumination needed to understand the gospel and to internalize the excellencies of divine truth, is imparted directly by God alone. This knowledge is given immediately by God and not obtained through natural means that operate by their own power. While God often makes use of natural means, yet the medium is not what causes the effect. God may teach us many things through nature and reason, and even use the words of Scripture to convey a doctrine or proposition, but only God can illumine them in such a way wherein we see their beauty and excellency. Those who are unregenerate have no capacity to love what is spiritual and are not partly but wholly dependent on God to translate them from darkness to light. Edwards does an excellent job explaining how spiritual light is actually given.
It is not every affecting view that men have of the things of religion that is this spiritual and divine light. Men by mere principles of nature are capable of being affected with things that have a special relation to religion as well as other things. A person by mere nature, for instance, may be liable to be affected with the story of Jesus Christ, and the sufferings he underwent, as well as by any other tragical story: he may be the more affected with it from the interest he conceives mankind to have in it: yea, he may be affected with it without believing it; as well as a man may be affected with what he reads in a romance, or sees acted in a stage play. He may be affected with a lively and eloquent description of many pleasant things that attend the state of the blessed in heaven, as well as his imagination be entertained by a romantic description of the pleasantness of fairy land, or the like. And that common belief of the truth of the things of religion, that persons may have from education or otherwise, may help forward their affection. We read in Scripture of many that were greatly affected with things of a religious nature, who yet are there represented as wholly graceless, and many of them very ill men. A person therefore may have affecting views of the things of religion, and yet be very destitute of spiritual light. Flesh and blood may be the author of this: one man may give another an affecting view of divine things with but common assistance: but God alone can give a spiritual discovery of them.
The mind having a sensibleness of the excellency of divine objects, dwells upon them with delight; and the powers of the soul are more awakened and enlivened to employ themselves in the contemplation of them, and exert themselves more fully and much more to the purpose. The beauty and sweetness of the objects draws on the faculties, and draws forth their exercises: so that reason itself is under far greater advantages for its proper and free exercises, and to attain its proper end, free of darkness and delusion.
A true sense of the divine excellency of the things of God's word doth more directly and immediately convince of the truth of them; and that because the excellency of these things is so superlative. There is a beauty in them that is so divine and godlike, that is greatly and evidently distinguishing of them from things merely human, or that men are the inventors and authors of; a glory that is so high and great, that when clearly seen, commands assent to their divinity and reality. When there is an actual and lively discovery of this beauty and excellency, it will not allow of any such thought as that it is a human work, or the fruit of men's invention. This evidence that they that are spiritually enlightened have of the truth of the things of religion, is a kind of intuitive and immediate evidence. They believe the doctrines of God's word to be divine, because they see divinity in them; i.e., they see a divine, and transcendent, and most evidently distinguishing glory in them; such a glory as, if clearly seen, does not leave room to doubt of their being of God, and not of men.
Such a conviction of the truth of religion as this, arising, these ways, from a sense of the divine excellency of them, is that true spiritual conviction that there is in saving faith. And this original of it, is that by which it is most essentially distinguished from that common assent, which unregenerate men are capable of.
All may hence be exhorted earnestly to seek this spiritual light. To influence and move to it, the following things may be considered.
1. This is the most excellent and divine wisdom that any creature is capable of. It is more excellent than any human learning; it is far more excellent than all the knowledge of the greatest philosophers or statesmen. Yea, the least glimpse of the glory of God in the face of Christ doth more exalt and ennoble the soul, than all the knowledge of those that have the greatest speculative understanding in divinity without grace. This knowledge has the most noble object that is or can be, viz., the divine glory or excellency of God and Christ. The knowledge of these objects is that wherein consists the most excellent knowledge of the angels, yea, of God himself.
2. This knowledge is that which is above all others sweet and joyful. Men have a great deal of pleasure in human knowledge, in studies of natural things; but this is nothing to that joy which arises from this divine light shining into the soul. This light gives a view of those things that are immensely the most exquisitely beautiful, and capable of delighting the eye of the understanding. This spiritual light is the dawning of the light of glory in the heart. There is nothing so powerful as this to support persons in affliction, and to give the mind peace and brightness in this stormy and dark world.
3. This light is such as effectually influences the inclination, and changes the nature of the soul. It assimilates the nature to the divine nature, and changes the soul into an image of the same glory that is beheld. 2 Cor. 3:18, "But we all with open face, beholding as in a glass the glory of the Lord, are changed into the same image, from glory to glory, even as by the Spirit of the Lord." This knowledge will wean from the world, and raise the inclination to heavenly things. It will turn the heart to God as the fountain of good, and to choose him for the only portion. This light, and this only, will bring the soul to a saving close with Christ. It conforms the heart to the gospel, mortifies its enmity and opposition against the scheme of salvation therein revealed: it causes the heart to embrace the joyful tidings, and entirely to adhere to, and acquiesce in the revelation of Christ as our Saviour: it causes the whole soul to accord and symphonize with it, admitting it with entire credit and respect cleaving to it with full inclination and affection; and it effectually disposes the soul to give up itself entirely to Christ.
4. This light, and this only, has its fruit in a universal holiness of life. No merely notional or speculative understanding of the doctrines of religion will ever bring to this. But this light, as it reaches the bottom of the heart, and changes the nature, so it will effectually dispose to a universal obedience. It shows God's worthiness to be obeyed and served. It draws forth the heart in a sincere love to God, which is the only principle of a true, gracious, and universal obedience; and it convinces of the reality of those glorious rewards that God has promised to them that obey him.
Excerpts from: A Divine and Supernatural Light, Immediately Imparted to the Soul by the Spirit of God, Shown to be Both Scriptural and Rational Doctrine - A Sermon by Jonathan Edwards