Praise the LORD with harp: sing unto him with the psaltery and an instrument of ten strings.
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Augustine of Hippo
2. "Praise the Lord with harp:" praise the Lord, presenting unto Him your bodies a living sacrifice. "Sing unto Him with the psaltery for ten strings" (ver. 2): let your members be servants to the love of God, and of your neighbour, in which are kept both the three and the seven commandments.