Authority

 The idea of AUTHORITY is replete in the Bible. It has been this way since the beginning of time. After all, God spoke the very world into existence. That is the ultimate authority! Early on, it is clearly illustrated (Deut. 11: 26-28) that God's word is something which we ought to follow AND that there are consequences if we do not follow it. That is authority. Later on, authority is shown to belong to Christ (Matthew 17:5; 28:18-20.) As I said, authority is EVERYWHERE in the Bible.

Every christian understands the concept of authority. If they don't understand it, they would never have obeyed the Gospel. Why would anyone ever bother to be baptized and make efforts to be obedient if he didn't believe in an Authority who says that, without obedience, spiritual death is assured? You cannot continue in Christianity without a committment to submitting to the authority of God and His word (the Bible.)
Here is my main point. You are allowed to believe (because of free will) whatever you want about the acceptability of using musical instruments in worship, whether you are right or wrong. However, you should know (before you try to use this argument anymore) that the word authority is a NOUN and the word authorized is an ADJECTIVE. But they are basically the SAME word. Therefore, you will not be able to support (logically, anyway) your theology with the argument that the word "authorized" is not present in the King James version of the Bible. It may be true that the word is not physically printed in the pages of your Bible, however, the concept of "authorized" is painted on every single page of the 66 books of the Bible...and with bright colors that anyone can recognize.

Just some food for thought, y'all.