Mark says that the brothers James and John were given the title "Boanerges", which Mark tells us means "Sons of Thunder", although many modern scholars disagree with this translation. Many explanations have been given for this title but none commands a consensus. Mark does not explain why Jesus gave Simon the name Peter, meaning rock. has his naming in connection with the church and has it relate to his character. It could also have an ironic meaning, as even Peter denies Jesus in the end.