“I must preach the kingdom of God…because for this purpose I have been sent.”
Jesus
Luke 4:43b
If you really choose to make Jesus the Lord of your life, your worldliness should decrease as His Kingdom reflection increases in you.
You should become more and more like Him.
Your life should reflect the Kingdom of God.
Whether you preach out loud with words or by how you live you should be preaching the Kingdom of God not the religious doctrine and worldly ways of men.