You work every day under the supervision of God. Do what you do because God has you there. Live at peace. The war in your own heart is over and you don’t need to worry with your focus on God.
A sound mind focused on God’s Word is vital for all people, and pastors especially. Fill your mind with God’s Word, then live it and share it with others.
The most beautiful adornment is inner beauty springing from a love of God and understanding of His Word. There are also many attributes pastors should have for effective teaching, such as patience and living the truth.