David
Psalm 9:13BSB·traditional attribution

Be merciful to me, O LORD; see how my enemies afflict me! Lift me up from the gates of death,

John Calvin Reformed @genevareformer

Psalm 9 David, after having recounted the former victories which he had gained, and exalted in lofty strains the grace and power of God in their happy issue, now again, when he sees new enemies and dangers rising up, implores the protection of the same God by whom he had before been delivered, and beseeches him to overthrow the pride of his enemies. To the chief musician Almuth Laben.

Commenting on Psalm 9:1-20

C.H. Spurgeon Reformed Baptist @princeofpreachers

Memories of the past and confidences concerning the future conducted the man of God to the mercy seat to plead for the needs of the present. Between praising and praying he divided all his time. How could he have spent it more profitably?

Matthew Henry Presbyterian @wholebiblehenry

In these verses, I. David, having praised God himself, calls upon and invites others to praise him likewise, Psa 9:11. Those who believe God is greatly to be praised not only desire to do that work better themselves, but desire that others also may join with them in it and would gladly be instrumental to bring them to it: Sing praises to the Lord who dwelleth in Zion.

Commenting on Psalm 9:11-20