All of a sudden the light goes on and the truth shines forth like a blazing sun. The Bible is a closed book to a closed heart. It must be illuminated by the same Spirit that inspired it. Only the Christian has access to the Spirit's illumination. But far too few Christians earnestly seek for spiritual eyes.
Spiritual illumination is similar to physical illumination cause by a light.
Turning on a lamp does not fill the room with furniture, it merely reveals the furniture that is already in the room. A similar thing takes place with the Scriptures. The illumination of the Spirit does not invent truth in the Scriptures, it merely reveals the truth that is already there. The Limits of Language Language of itself is inadequate to express spiritual realities. A word is merely a symbol, it can never put our minds in real possession of spiritual things.