The psalmist has an extremely high view of God’s ability to respond mightily to the believer’s plea for help. He uses poetic language to describe the indescribable-God’s almighty power. God sounds frightening because He is. When God acts to help someone prevail over injustice, the energy God expends will be much more frightening than the victim’s adversary.
While God’s omnipotent power is awesome, the believer can be assured that God acts on our behalf, not against us. The forcefulness of God’s intervention may be like a hurricane, affecting everyone around, but the intention is always to rescue the faithful believer from sin and suffering.
PSALM 18:7-15 – 7 Then the earth shook and trembled; the foundations also of the hills moved and were shaken, because he was wroth.
8 There went up a smoke out of his nostrils, and fire out of his mouth devoured: coals were kindled by it.
9 He bowed the heavens also, and came down: and darkness was under his feet.
10 And he rode upon a cherub, and did fly: yea, he did fly upon the wings of the wind.
11 He made darkness his secret place; his pavilion round about him were dark waters and thick clouds of the skies.
12 At the brightness that was before him his thick clouds passed, hail stones and coals of fire.
13 The Lord also thundered in the heavens, and the Highest gave his voice; hail stones and coals of fire.
14 Yea, he sent out his arrows, and scattered them; and he shot out lightnings, and discomfited them.
15 Then the channels of waters were seen, and the foundations of the world were discovered at thy rebuke, O Lord, at the blast of the breath of thy nostrils.