By the Cross of Christ is not to be understood here the two pieces of wood to which He was nailed, but all the afflictions of the believers whose sufferings are Christ's sufferings. Elsewhere Paul writes: "Who now rejoice in my sufferings for you, and fill up that which is behind of the afflictions of Christ in my flesh for his body's sake, which is the church." (Col. 1:24.)
It is good for us to know this lest we sink into despair when our opponents persecute us. Let us bear the cross for Christ's sake. It will ease our sufferings and make them light as Christ says, Matthew 11:30, "My yoke is easy, and my burden is light."
VERSE 14. By whom the world is crucified unto me, and I unto the world.
"The world is crucified unto me," means that I condemn the world. "I am crucified unto the world," means that the world in turn condemns me. I detest the doctrine, the self-righteousness, and the works of the world. The world in turn detests my doctrine and condemns me as a revolutionary heretic. Thus the world is crucified unto us and we unto the world.
The monks imagined the world was crucified unto them when they entered the monastery. Not the world, but Christ, is crucified in the monasteries.
In this verse Paul expresses his hatred of the world. The hatred was mutual. As Paul, so we are to despise the world and the devil. With Christ on our side we can defy him and say: "Satan, the more you hurt me, the more I oppose you."
VERSE 15. For in Christ Jesus neither circumcision availeth anything, nor uncircumcision, but a new creature.
Since circumcision and uncircumcision are contrary matters we would expect the Apostle to say that one or the other might accomplish some good. But he denies that either of them do any good. Both are of no value because in Christ Jesus neither circumcision nor uncircumcision avail anything.
Reason fails to understand this, "for the natural man receiveth not the things of the Spirit of God." (I Cor. 2:14.) It therefore seeks righteousness in externals. However, we learn from the Word of God that there is nothing under the sun that can make us righteous before God and a new creature except Christ Jesus.
A new creature is one in whom the image of God has been renewed. Such a creature cannot be brought into life by good works, but by Christ alone. Good works may improve the outward appearance, but they cannot produce a new creature. A new creature is the work of the Holy Ghost, who imbues our hearts with faith, love, and other Christian virtues, grants us the strength to subdue the flesh and to reject the righteousness of the world.