Peter's message to believers is to set aside all of the debauchery that is being practiced by the world. Not in an effort to be better than anyone else, but because God has called us to holiness. The world may not understand us and mock our change of heart. But we know that we do not need to be discouraged or try to overcome the world; for we know that we are victorious in Christ Jesus! Living in the spirit according to the will of God!