'Cross' in the Bible

But I, brethren, if I yet preach circumcision, why am I yet persecuted? Then the scandal of the cross has been done away.

As many as desire to have a fair appearance in the flesh, these compel you to be circumcised, only that they may not be persecuted because of the cross of Christ.

But far be it from me to boast save in the cross of our Lord Jesus Christ, through whom the world is crucified to me, and I to the world.