Charles Ellicott Commentary Psalms 104:32

"Who looketh on the earth, and it trembleth; He toucheth the mountains, and they smoke." — Psalms 104:32 (ASV)

Trembles. — With the praise is united something of awe and fear, since the majesty and power of Him who made the world is so great. Its very existence is dependent on His will, and a glance, a touch from Him would be enough to shake it to its foundations and consume it. For “the smoky mountain tops,” compare Psalm 144:5, and see Note, Psalms 148:8.