Sing praises to the LORD, who dwells in Zion! Declare His deeds among the people. When He avenges blood, He remembers them; He does not forget the cry of the humble.
Studying God’s works and His plan in the Bible gives us ample reason to praise our Creator for all that He has done and is doing. Our Bible study and meditation should also motivate us to want to share the wonders He has done with others. We do this within our own circle of influence, but also in a larger sense by supporting the preaching of the gospel through God’s Church.
One reason given to praise God is because He remembers our needs and will not allow injustice to continue. “This Great King serves his people, vindicating the needy. Even when they were in distress and it seemed as if God was not present, the nations were to understand that his nature will never tolerate injustice done to his elect” (Zondervan NIV Bible Commentary note on Psalm 9).
For more about God’s justice, see point 1 of the article “Purpose of Prophecy.”