Renewal doesn’t have anything to do with doctrine or teachings. It has to do with the spiritual renewal of
one’s relationship with God through the Lord Jesus Christ.
It doesn’t even have to do with morality. It has to do
with committing oneself to renewal in the Word of God. (The Bible has teachings everyone who doesn’t make excuses can understand.) Renewal in one’s spirit through the Word of God then produces adherence to moral teachings. You start renewal with yourself and God then begins to work in your spirit. No one needs a degree to understand that.