Then the earth reeled and rocked; the foundations also of the mountains trembled and quaked, because he was angry.
PSALM 18. We all know through what difficulties and almost insurmountable obstacles David came to the kingdom. Even to the time of Saul’s death he was a fugitive, and, as it were, an outlaw, and wearily passed his life in fear, amidst many threatenings and dangers of death.
Commenting on Psalm 18:1-50
In most poetical language the Psalmist now describes his experience of Jehovah's delivering power. Poesy has in all her treasures no gem more lustrous than the sonnet of the following verses; the sorrow, the cry, the descent of the Divine One, and the rescue of the afflicted, are here set to a music worthy of the golden harps.
Commenting on Psalm 18:4
There was no great space between the cry and its answer. The Lord is not slack concerning his promise, but is swift to rescue his afflicted. David has in his mind's eye the glorious manifestations of God in Egypt, at Sinai, and on different occasions to Joshua and the judges; and he considers that his own case exhibits the same glory of power and goodness...