Revealing things represents making them known. "Deep things from darkness" represent secrets that people do not know. Alternate translation: "He makes known secrets that people do not know" (See: [[rc://en/ta/man/jit/figs-metaphor]])
Bringing things out into the light is a metaphor for making them known. Alternate translation: "makes known things that no one can see" (See: [[rc://en/ta/man/jit/figs-metonymy]])