According to Professor Ambrosio, how does the idea of the hero in Greek and Roman culture become integrated into the idea of the saint in the process of conversion and totalization?

Intro to Human Philosophy
According to Professor Ambrosio, how does the idea of the hero in Greek and Roman culture become integrated into the idea of the saint in the process of conversion and totalization? Address this question by comparing and contrasting at least two of the following: Saul of Tarsus, Augustine of Hippo, Mohammed.