The convert Saul would eventually exchange his Jewish name for the Greco-Roman name , as he expanded his ministry to the Gentiles

Paul

Explanation:

Saul of Tarsus was first seen in biblical accounts as he witnessed to the execution of Stephen, who was the first recorded martyr to the cause of Jesus Christ himself.  

Upon conversion to Christianity, he was given the name paul, which means small or humble. He remained a significant leader in the activities of the early Christian church.  

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

i believe your answer is mountains.