John 1:43

καὶ ἤγαγεν αὐτὸν πρὸς τὸν Ἰησοῦν. He was not content to allow his report to work in his brother's mind, but induced him there and then, though probably on the following day, as now it must have been late, to go to Jesus. ἐμβλέψας … Πέτρος. Jesus may have known Simon previously, or may have been told his name by Andrew. “Thou art Simon, Jonah's son, or better, John's son. Thou shalt be called Kephas.” This name, Kephas or Peter, stone or mass of rock, Simon did receive at Caesarea Philippi on his confession of Jesus as the Christ (Matthew 16:17-18); a confession prompted not by “flesh and blood,” that is, by his brother's experience, but by his own inwrought and home-grown conviction. The reason of this utterance to Simon is understood when it is considered that the name he as yet bore, Simon Barjona, was identified with a character full of impulsiveness; which might well lead him to suppose he would only bring mischief to the Messiah's kingdom. But, says Christ, thou shalt be called Rock. Those who enter Christ's kingdom believing in Him receive a character fitting them to be of service.