By building monuments to the prophets and other righteous people that their forefathers had martyred, the Pharisees were saying that they would not have killed them if they had been alive then. These construction projects constituted professions of their own spiritual superiority as well as honors for the dead. The Christian who naively thinks he or she would not have committed the mistakes that the early disciples of Jesus did makes the same assumption of superiority. [source][source][source]