And God said, “Let there be light,” and there was light. — Genesis 1:3
The first step is taken when we begin to realize that goodness and truth are something transcendent.
People who focus exclusively on externals do not even know what is good or what is true; everything connected with self-love and love of worldly advantages they consider good, and anything that promotes those two loves they consider true.
They are unaware that such “goodness” is evil and such “truth” false. When we are conceived anew, however, we first begin to be aware that our “good” is not good. And as we advance further into the light, it dawns on us that the Lord exists and that he is goodness and truth itself.
The Lord says in John that we need to know of his existence:
Unless you believe that I am, you will die in your sins. (John 8:24)
We need to know too that the Lord is goodness itself, or life, and truth itself, or light, and consequently that nothing good or true exists that does not come from him.
This is also found in John:
In the beginning there was the Word, and the Word was present with God, and the Word was God. Everything was made by him, and nothing that was made was made without him. In him was life, and the life was the light of humankind; but the light appears in the darkness. He was the true light that shines on every person coming into the world. (John 1:1, 3, 4, [5,] 9)
from Secrets of Heaven, Volume 1, Section 20