Rejoice in the Lord, O you righteous. Praise befits the upright. Praise the Lord with the lyre; make melody to him with the harp of ten strings. Sing to him a new song; play skillfully on the strings, with loud shouts. For the word of the Lord is upright, and all his work is done in faithfulness. He loves righteousness and justice; the earth is full of the steadfast love of the Lord.