Primasius of Hadrumetum — on Rev 4:5 (COMMENTARY ON THE APOCALYPSE 4:5)

“In the voices and thunder the proclamation of the gospel is indicated, while the lightning signifies the miraculous signs, as we read in the Gospel, "They went forth and preached everywhere, while the Lord worked with them and confirmed the message by the signs which followed." And again: "The voice of your thunder was in the whirlwind, and your lightning illumined the whole world." For, as though from the clouds, the world, trembling by the thunderous commandments and astonishing miracles, was brought to fear and made to believe.”