David
Psalm 104:32ESV·traditional attribution

who looks on the earth and it trembles, who touches the mountains and they smoke!

John Calvin Reformed @genevareformer

PSALM 104 This psalm differs from the preceding, inasmuch as it neither treats of the special benefits which God bestows upon his Church, nor lifts us up to the hope of the heavenly life, but by presenting to us a lively image of his wisdom, power, and goodness in the creation of the world, and in the order of nature, encourages us to praise him...

Commenting on Psalm 104:1-35

C.H. Spurgeon Reformed Baptist @princeofpreachers

He looketh on the earth, and it trembleth. The Lord who has graciously displayed his power in acts and works of goodness might, if he had seen fit, have overwhelmed us with the terrors of destruction, for even at a glance of his eye the solid earth rocks with fear. He toucheth the hills, and they smoke. Sinai was altogether on a smoke when the Lord descended upon it.

Matthew Henry Presbyterian @wholebiblehenry

The psalmist concludes this meditation with speaking, I. Praise to God, which is chiefly intended in the psalm. 1. He is to be praised, (1.) As a great God, and a God of matchless perfection: The glory of the Lord shall endure for ever, Psa 104:31.

Commenting on Psalm 104:31-35