2Corinthians 4:6 For God, who said, "Light shall shine out of darkness," is the One who has shone in our hearts to give the light of the knowledge of the glory of God in the face of Christ.
2Timothy 1:9-10 [God] has saved us, and called us with a holy calling, not according to our works, but according to His own purpose and grace which was granted us in Christ Jesus from all eternity, but now has been revealed by the appearing of our Savior Christ Jesus, who abolished death, and brought life and immortality to light through the gospel,
Has God's light shined in your heart? Jonathan Edwards gives the best description I've seen of the effects of that light. Test your heart and see if you are in the faith. I lived many years acknowledging that Jesus was Lord and agreeing with church creeds, but this sense of pleasure and delight in the excellency of God did not occur until much later. This is the heart-sense we need to unveil before our children. And we must pray for God's light, it is a gift we cannot strive toward.
from A Divine and Supernatural Light by Jonathan Edwards
[The] spiritual and divine light … may be thus described: A true sense of the divine excellency of the things revealed in the word of God, and a conviction of the truth and reality of them thence arising. This spiritual light primarily consists in the former of these, viz. a real sense and apprehension of the divine excellency of things revealed in the word of God. A spiritual and saving conviction of the truth and reality of these things, arises from such a sight of their divine excellency and glory; so that this conviction of their truth is an effect and natural consequence of this sight of their divine glory. There is therefore in the spiritual light,
1. A true sense of the divine and superlative excellency of the things of religion; a real sense of the excellency of God and Jesus Christ, and of the work of redemption, and the ways and works of God revealed in the gospel. There is a divine and superlative glory in these things; an excellency that is of a vastly higher kind, and more sublime nature, than in other things; a glory greatly distinguishing them from all that is earthly and temporal. He that is spiritually enlightened truly apprehends and sees it, or has a sense of it. He does not merely rationally believe that God is glorious, but he has a sense of the gloriousness of God in his heart. There is not only a rational belief that God is holy, and that holiness is a good thing, but there is a sense of the loveliness of God’s holiness. There is not only a speculatively judging that God is gracious, but a sense how amiable God is on account of the beauty of this divine attribute.
There is a twofold knowledge of good of which God has made the mind of man capable. The first, that which is merely notional; as when a person only speculatively judges that any thing is, which, by the agreement of mankind, is called good or excellent, viz. that which is most to general advantage, and between which and a reward there is a suitableness,—and the like. And the other thing is, that which consists in the sense of the heart; as when the heart is sensible of pleasure and delight in the presence of the idea of it. In the former is exercised merely the speculative faculty, or the understanding, in distinction from the will or the disposition of the soul. In the latter, the will, or inclination, or heart are mainly concerned.
Thus there is a difference between having an opinion, that God is holy and gracious, and having a sense of the loveliness and beauty of that holiness and grace. There is a difference between having a rational judgment that honey is sweet, and having a sense of its sweetness. A man may have the former that knows not how honey tastes; but a man cannot have the latter unless he has an idea of the taste of honey in his mind. So there is a difference between believing that a person is beautiful, and having a sense of his beauty. The former may be obtained by hearsay, but the latter only by seeing the countenance. When the heart is sensible of the beauty and amiableness of a thing, it necessarily feels pleasure in the apprehension. It is implied in a person’s being heartily sensible of the loveliness of a thing, that the idea of it is pleasant to his soul; which is a far different thing from having a rational opinion that it is excellent.