Albert Barnes' Notes on the Whole Bible - Matthew 16:13-20
See also Mark 8:27-29, and Luke 9:18-20.Cesarea Philippi - There were two cities in Judea called Caesarea. One was situated on the borders of the Mediterranean (See the notes at Acts 8:40), and the other was the one mentioned here. This city was greatly enlarged and ornamented by Philip the tetrarch, son of Herod, and called Caesarea in honor of the Roman emperor, Tiberius Caesar. To distinguish it from the other Caesarea the name of Philip was added to it, and it was called Caesarea Philippi,... read more
The Pulpit Commentary - Matthew 16:20-28
Necessity of the cross. Peter's words pierced like a sharp thorn into the very heart of Christ, and roused as keen an indignation as his previous words had awakened gratitude. For the horror which our Lord saw in Peter's face as he announced the near approach of death reflected the horror he himself had passed through during those past days in which he had been making up his mind to die; the incapacity of Peter to understand that death should be the necessary step to glory tended to upset... read more