This document discusses the warfare of the believer according to Ephesians 4. It explains that believers are called to transform their human nature into God's divine nature through the Holy Spirit. Believers are called to walk worthily of their high calling in humility. They must endeavor to keep unity in the church and use their spiritual gifts to mature other believers. Believers are instructed to put off their old sinful nature and put on the new self through renewing their mind. They are to speak only what is helpful for building others up. Overall, the document provides guidance for believers on how to live according to their spiritual identity and calling through spiritual warfare and maturity.