Bede the Venerable
Catena Aurea · Markusevangelium 3
And he goeth up into a mountain, and calleth unto him whom he would: and they came unto him. And he ordained twelve, that they should be with him, and that he might send them forth to preach, And to have power to heal sicknesses, and to cast out devils: And Simon he surnamed Peter; And James the son of Zebedee, and John the brother of James; and he surnamed them Boanerges, which is, The sons of thunder: And Andrew, and Philip, and Bartholomew, and Matthew, and Thomas, and James the son of Alphæus, and Thaddæus, and Simon the Canaanite, And Judas Iscariot, which also betrayed him.
(ubi sup.) And the reason that the Lord willed that he should at first be called otherwise, was that from the change itself of the name, a mystery might be conveyed to us. Peter then in Latin or in Greek means the same thing as Cephas in Hebrew, and in each language the name is drawn from a stone. Nor canit be doubted that is the rock of which Paul spoke, And this rock was Christ. (1 Cor. 10:4) For as Christ was the true light, and allowed also that the Apostles should be called the light of the world, (Matt. 5:14.) so also to Simon, who believed on the rock Christ, He gave the name of Rock.