David
Psalm 68:26BSB·traditional attribution

Bless God in the great congregation; bless the LORD from the fountain of Israel.

John Calvin Reformed @genevareformer

PSALM 68 In this psalm it was David’s design to celebrate the victories which, through the blessing of God, he had gained over his enemies; As to the time and occasion of the composition of this psalm, the majority of interpreters refer it to the translation of the ark from the house of Obed-Edom to Mount Zion, and with this every part of it would, no doubt, harmonize.

Commenting on Psalm 68:1-35

C.H. Spurgeon Reformed Baptist @princeofpreachers

Bless ye God in the congregations. Let the assembled company magnify the God whose ark they followed. United praise is like the mingled perfume which Aaron made, it should all be presented unto God. He blesses us; let him be blessed. Even the Lord, from the fountain of Israel.

Matthew Henry Presbyterian @wholebiblehenry

In these verses we have three things: - I. The gracious promise which God makes of the redemption of his people, and their victory over his and their enemies (Psa 68:22, Psa 68:23): The Lord said, in his own gracious purpose and promise, "I will do great things for my people, as the God of their salvation," Psa 68:20.

Commenting on Psalm 68:22-31