What Is Cephas in the Bible?
Person
An Aramaic word that means “stone” or “rock.” It is the name Jesus gave to Simon. In Greek it is “Peter.”
Where it appears in the Bible
John 1:42
What the Bible says
John 1:42
And he brought him to Jesus. And Jesus looking upon him, said: Thou art Simon the son of Jona: thou shalt be called Cephas, which is interpreted Peter.
Douay-Rheims Bible (Challoner revision), public domain.
Source: John 1:42 and its NABRE note