Paul testifies of what Christ taught us about conversion: a clean break from the former life and an adoption of the new, which involves a continual renewal of the mind.
Within the unity of the church, each member is uniquely gifted grace from Christ, and Christ also gives individuals who will prepare church members for the work of service.
Paul once more points out his unworthiness to serve the Lord and His people, then he calls the gospel "the unfathomable riches of Christ” and explains God’s eternal purpose in the gospel.
Paul continues on with the concept of unity within the church by pointing to his own undeserved ministry to the Gentiles and to the revealed mystery of Gentiles being joined together with Jewish believers in the church.