The audience assumes all of the people working in the office are Jewish. The men are all involvedin crime, as we see early on. They are given different roles such as the older one and the hard one.
The first location is in what is presumably a Jewish-run bank with a Jewish community, which the men are pretending to be involved in. The men are shown after that in a a warehouse and then a pub- showing they probably like drinking.
There is a cultural reference to the Jewish community, and they are also talking about the bible.