Verse 12
At the brightness that was before him his thick clouds passed - The word נגה nogah signifies the lightning. This goes before him: the flash is seen before the thunder is heard, and before the rain descends; and then the thick cloud passes. Its contents are precipitated on the earth, and the cloud is entirely dissipated.
Hail-stones and coals of fire - This was the storm that followed the flash and the peal; for it is immediately added: -