Moses uses several rhetorical questions in this chapter. The purpose of these questions is to convince people of their sin. Likewise, the people's rhetorical question showed their ignorance. (See: [[rc://en/ta/man/jit/figs-rquestion]] and [[rc://en/tw/dict/bible/kt/sin]])
Sin is the name of a part of the Sinai Wilderness. It is not the description of a place, and it has nothing to do with sinning. (See: [[rc://en/ta/man/jit/translate-names]])