Albert Barnes Commentary Psalms 9:11

"Sing praises to Jehovah, who dwelleth in Zion: Declare among the people his doings." — Psalms 9:11 (ASV)

Sing praises to the Lord – As the result of these views of his character, and at the remembrance of his doings. The heart of the psalmist is full of exultation and joy at the remembrance of the divine interposition, and he naturally breaks out into these strong expressions, calling on others to rejoice also.

Which dwells in Zion – On the word Zion, see the notes at Psalm 2:6. Compare Psalm 3:4 and Psalm 5:7. As Zion was the place where the tabernacle was set up at this time, and the worship of God was celebrated, it is spoken of as his dwelling-place.

Declare among the people his doings – Make general and wide proclamation of what he has done; that is, make him known abroad, in his true character, so that others may also be brought to put their trust in him, and to Praise him.