In Col.1 verse 28 Paul says that he announced Christ. Here Paul does not say that he taught Christ or preached Christ, but that he announced Christ. As he announced Him, he was “warning every man and teaching every man in all wisdom” in order to “present every man full-grown in Christ.” Paul’s ministry, whether in announcing Christ or in warning and teaching every man in all wisdom, was to minister Christ to others so that they could be perfect and complete by maturing with Christ unto full growth.
To become full-grown in Christ is a matter of life. Christ must be added into us. Then we need to grow in Christ and gradually gain more of the stature of Christ. Eventually, as Christ is wrought into us, we shall become full-grown in Christ.