Psalm 48:11 Let Mount Zion rejoice, let the daughters of Judah be glad, because of thy judgments.
The people of God, the true believers in Yahweh, respond to the judgments of God with joy and gladness when gathered at the Temple Mount to worship. The believers in Jesus may always, every day, rejoice in the Presence of God, but daily joy springs from and is energized by the weekly celebration of God’s people gathered to hear the Gospel.
The word judgments is used here to refer generally to the whole of God’s Word, Law and Gospel. It also refers narrowly to the judgment upon sin, death and the devil at the cross and to the conviction of sin leading to repentance and faith. A further meaning refers to the Final Judgment when our enemies, the Enemies of God, are separated unto eternal hell.
There are three judgments: the judgment of sin on Jesus at the cross; the personal judgment on our sin when we come to repentance and faith; the final judgment of all sin forever. Each of the judgments (past, present, future) brings rejoicing and gladness to our hearts and lives when we remember and believe.