[Oberon]

You seem to be saying "It's different because it's different."

Now we've run the distinction into the ground, and I still fail to get it. I think that makes it time to give it up.

[jkl1122]

Here is another point that should make the difference even clearer. In Ephesians 5:19, we see the phrase "speaking to yourselves". In Colossians 3:16, we see the phrase "teaching and admonishing one another". Mechanical instruments are unable to speak, teach, or admonish.

Also please notice that "yourselves" and "one another" are reflexive pronouns. This means that everyone is to be doing the speaking, teaching, and admonishing.