He brought him to Jesus. Jesus looked at him, and said, "You are Simon the son of Jonah. You shall be called Cephas" (which is by interpretation, Peter).
Thou shalt be called Cephas ...  This new name assigned to Andrew's brother means "stone" or "pebble"; and for the connection this has with the foundation of the church and such things as the so-called primacy of this apostle, reference is made to extensive discussions of these and related subjects in my Commentary on Matthew, pp. 246-253.