How we cite our quotes: The book doesn't have numbered or titled chapters, but it is broken up into sections with sub-sections under these. We'll call this Chapter:Section:Paragraph.
Quote #4
The stranger smiled at the Jew. "He was a great man. The way I look at it, it takes a certain kind of nerve to preach to birds." (2.1.12)
It's likely that Frank had something of a Catholic upbringing, but he doesn't seem to practice Catholicism these days. He doesn't attend church or appear to have an active prayer life. To him, St. Francis is a figure of nerve and go-get-'em attitude.
Quote #5
Her expression as she dipped in among the soggy beans pieces of ham from a butt she had cut up caught his eye, and he felt for her repugnance for hating to touch the ham, and some for himself because he had never lived this close to Jews before. (3.1.19)
The Bobers practice Judaism without subscribing to all of its prohibitions, like not eating ham, but all these rules still influence them anyway. Ida seems to care more about keeping kosher than Morris does, which causes conflict between them.
Quote #6
"Sometimes," Morris answered, flushing, "to have to eat, you must keep open on holidays. On Yom Kippur I don't keep open. But I don't worry about kosher, which is to me old-fashioned. What I worry is to follow the Jewish Law."
[…]
"This means to do what is right, to be good. This means to other people." (5.4.12,14)
For Morris, honestly and righteousness are more important to being Jewish than being kosher or not working on holidays. He's quite the virtuous guy.