'Cross' in the Bible

Now brothers, if I still preach circumcision, why am I still persecuted? In that case the offense of the cross has been abolished.

Those who want to make a good impression in the flesh are the ones who would compel you to be circumcised—but only to avoid being persecuted for the cross of Christ.

But as for me, I will never boast about anything except the cross of our Lord Jesus Christ. The world has been crucified to me through the cross, and I to the world.