'Instruments' in the Bible

Do not go on offering members of your body to sin as instruments of wickedness. But offer yourselves to God [in a decisive act] as those alive [raised] from the dead [to a new life], and your members [all of your abilities—sanctified, set apart] as instruments of righteousness [yielded] to God.

Yet even lifeless things, whether flute or harp, when producing a sound, if they do not produce distinct [musical] tones, how will anyone [listening] know what is piped or played?

Speak to one another in psalms and hymns and spiritual songs, [offering praise by] singing and making melody with your heart to the Lord;