David
Psalm 66:3ESV·traditional attribution

Say to God, “How awesome are your deeds! So great is your power that your enemies come cringing to you.

John Calvin Reformed @genevareformer

PSALM 66 There may have been one deliverance in particular, which the Psalmist celebrates here in the name of the Church, but he includes the many and various mercies which God had all along conferred upon his chosen people. While he takes notice of the divine interposition in their behalf, in a crisis of great mercy and distress, he suggests it as matter of comfort...

Commenting on Psalm 66:1-20

C.H. Spurgeon Reformed Baptist @princeofpreachers

Say unto God. Turn all your praises to him. Devotion, unless it be resolutely directed to the Lord, is no better than whistling to the wind. How terrible art thou in thy works. The mind is usually first arrested by those attributes which cause fear and trembling; and, even when the heart has come to love God, and rest in him, there is an increase...

Matthew Henry Presbyterian @wholebiblehenry

I. In these verses the psalmist calls upon all people to praise God, all lands, all the earth, all the inhabitants of the world that are capable of praising God, Psa 66:1. 1. This speaks the glory of God, that he is worthy to be praised by all, for he is good to all and furnishes every nation with matter for praise. 2.

Commenting on Psalm 66:1-7