Peter was indignant and shrugged off the suggestion that he would be disloyal. He argued that he would be prepared to die with Jesus, and the rest of the disciples said they would face death too.
16:18-19 speaks in the future tense, as in a promise. Jesus at this point does not confer authority to St. Peter, so his later denial of Christ does not render it void. Christ actually prays for ...
In The Kingdom Elgar set about telling the story of the acts of the disciples after Jesus’s ascension ... and it introduces St Peter, who reflects on the denial of Christ, and then gathers ...