What does Psalm 9:7 mean?

In contrast to enemies, whom the Lord completely obliterates (Psalm 9:3–6), God lives forever on His throne. David acknowledges that God is, has been, and always will be the Supreme Authority over all of creation. That rule is not only complete, but also completely good (Psalm 9:8).

In Psalm 93:2 the psalmist addresses the Lord saying, "Your throne is established from of old; you are from everlasting." Psalm 106:48 proclaims, "Blessed be the LORD, the God of Israel, from everlasting to everlasting." From His throne God "will judge the world in righteousness by a man whom he has appointed [Jesus]; and of this he has given assurance to all by raising him from the dead" (Acts 17:31).

When Jesus ministered on earth, He demonstrated divinely perfect judgment, rooted in perfect knowledge. John 1:47 tells us Jesus commented on Nathanael when the future disciple was first approaching Him. When Nathanael asked Jesus how He knew him, Jesus replied, "Before Philip called you, when you were under the fig tree, I saw you" (John 1:48). John 2:24¬–25 tells us Jesus did not entrust Himself to the Passover crowd "because he knew all people and needed no one to bear witness about man, for he himself knew what was in man."