They stay at Sinai for a year, I believe, in the text, before they begin their movement, and Numbers contains some law, and much narrative material.

他们在西奈呆了一年，我认为，文中这么写，在他们开始迁移之前，《民数记》中有很多法规和叙述材料。

耶鲁公开课 - 旧约导论课程节选