Revealing things represents making them known. "Deep things from darkness" represent secrets that people do not know. AT: "He makes known secrets that people do not know" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Bringing things out into the light represents making them known. AT: "brings out into the light the shadows where dead people are" or "makes known the place where dead people are" (See: [[rc://en/ta/man/translate/figs-metaphor]])
God leading nations represents God causing enemy nations to lead them. The word "them" represents nations, which here represents the people of those nations. AT: "he also causes their enemies to lead them along as prisoners" (See: [[rc://en/ta/man/translate/figs-metonymy]])