The purpose of the message of the cross is to bring christians to maturity, so as to become conformed to the image of his (God’s) son, and to become perfect in Christ.
..be perfect… just as your father in heaven is perfect
You are the salt of the earth…
You are the light of the world…
…that we may present every man perfect in Christ Jesus.
My little children’s of whom I travail in birth again until Christ be formed in you.
…Since you have put off the old man with his deeds, and have put on the new man who is renewed in knowledge according to the image of Him who created him.