You have turned for me my mourning into dancing; You have put off my sackcloth and clothed me with gladness, To the end that my glory may sing praise to You and not be silent. O LORD my God, I will give thanks to You forever. (Psalm 30:11-12)
This psalm was sang during the dedication of the house of David. How wonderful when God changes things. When He takes away our mourning and turns it into gladness. To be forgiven and sanctified by God gives much more joy than all the treasures of the earth combined!