Acts 9:3 - Clarke's commentary and critical notes on the Bible

And as he journeyed, he came near Damascus: and suddenly there shined round about him a light from heaven: Suddenly there shined round about him - This might have been an extraordinary flash of the electric fluid, accompanied with thunder, with which God chose to astonish and confound Saul and his company; but so modified it as to prevent it from striking them dead. Thunder would naturally follow such a large quantity of this fluid as appears to have been disengaged at this time; and out of this thunder, or immediately after it, Christ spoke in an awful and distinct voice, which appears to have been understood by Saul only.