'Instrument' in the Bible

Yes, to them you are like a singer of love songs who has a beautiful voice and plays skillfully on an instrument. They hear your words, but they don’t obey them.

But the Lord said to him, “Go! For this man is My chosen instrument to take My name to Gentiles, kings, and the Israelites.

So if anyone purifies himself from anything dishonorable, he will be a special instrument, set apart, useful to the Master, prepared for every good work.