BROTHERS and SISTERS, see with what large letters I write to you with my own hand! Those who want to make a good showing in the flesh are trying to compel you to be circumcised, only so that they may not be persecuted for the Cross of Christ. For even the circumcised do not themselves keep the Law, but they want you to be circumcised so that they may boast about your flesh. God forbid that I should boast in anything except the Cross of our Lord Jesus Christ, by Whom the world has been crucified to me, and I to the world. For in Christ Jesus, neither circumcision nor uncircumcision means anything, but a new creation! To those who will live by this rule, may there be peace and mercy upon them, and upon the Israel of God. From now on, let no one trouble me, for I carry the marks of the Lord Jesus branded on my body. Brothers and sisters, may the grace of our Lord Jesus Christ be with your spirit. Amen.
Blessed Theophylact, archbishop of Ochre and Bulgaria, briefly explains what Saint Paul means by the world,
By "the world" Paul means the affairs of this life, such as fame, wealth, luxuries, pleasures, and the like. "These things are dead to me," says Saint Paul, "and I to them, for a twofold deadening has taken effect. They cannot possess me, for they are dead. Nor can I run to them, for I am dead."