Out of the brightness of his presence clouds advanced, with hailstones and bolts of lightning.
Read Psalm 18:12 Using Other Translations
At the brightness that was before him his thick clouds passed, hail stones and coals of fire.
Out of the brightness before him hailstones and coals of fire broke through his clouds.
Thick clouds shielded the brightness around him and rained down hail and burning coals.
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(New International Version Bible Online)