3. A commitment to learningProverbs 1:5: A wise man will hear and increase learning, And a man of understanding will attain wise counsel, Proverbs 16:23: The heart of the wise teaches his mouth, And adds learning to his lips.
How many of these terms can you define? A capella, modulation, chord progression, I-VI-II-V, compound time, straight beat, tenor, dominant chord.
Just like medicine, law, carpentry and virtually everything else you can think of, music has a whole lot of unique terminology. And if you're serious about this as a ministry, you'll commit yourself to learning as much about your trade as possible.
Books are a great source of musical information. I realise that a lot of people want to avoid musical theory, but how much you know will have a direct effect on your ability to minister effectively.
Unless you are in a really traditional church, look for books (such as - shameless plug here - my book Contemporary Music Theory) that explain theory as it applies to the modern musician. A good book should give you an understanding of chord structure, chord substitution, as well as scales and how they relate to improvisation.
Now read: A commitment to time