He spread a cloud for a covering; and fire to give light in the night.
Ver. 39. He spread a cloud] It must needs be a very large one that could cover such an army from the extraordinary heats there; for the deserts of Arabia are extreme hot, both by reason of the climate and also of the sand's reflecting the sunbeams. So still upon all the glory (the Church) shall be a covering, Isaiah 4:5 .
And fire to give light, &c.] A fiery pillar against the error, terror, and danger of the darkness. See Nehemiah 9:19 .