Beloved, I beg you as foreigners and pilgrims, to abstain from fleshly lusts, which war against the soul;
Jesus is a cornerstone, the foundation upon which the church is built, but yet He is also a stumbling stone. The Jews stumble over Him because of the crucifixion. They could not understand the Messiah being crucified and so they stumbled over this stone. He became a rock of offence to them.