Psalms 18:13,14 - Joseph Benson’s Commentary on the Old and New Testaments

The Lord also thundered, &c. The preceding verse mentioned the lightning with its effects; this gives us the report of the thunder, and the increasing storm of hail and fire that attended it. Yea, he sent out his arrows Namely, lightnings, as it is expressed in the next clause; and scattered them Namely, mine enemies, which is sufficiently understood from Psalms 18:3; Psalms 18:17, and from the whole context. Thus magnificently does the psalmist describe the discharge of the celestial artillery upon God's enemies. Terrible was the execution of the divine vengeance upon them, “as when lightnings and thunders, hail-stones and balls of fire, making their way through the dark clouds which contain them, strike terror and dismay into the hearts of men. Such is the voice, and such are the arrows of the Lord Almighty, wherewith he discomfiteth all who oppose the execution of his counsels, and obstruct the salvation of his chosen. Every display and description of this sort, and indeed every thunder-storm which we behold, should remind us of that exhibition of power and vengeance which is hereafter to accompany the general resurrection.” Horne.