The juxtaposition of this phrase with the previous, connected as it is with the little word and,
indicates that with this clause Nehemiah explains the nature of the corrupt conduct he is thinking about (so that the word and
amounts to: that is
). Though the words commandments
and statutes
and rules
each have their own nuance, they serve here as synonyms to catch the totality of the instruction that you commanded your servant Moses,
that is, the whole manner of worship and life revealed in the Pentateuch. The choice of vocabulary is again reminiscent of the language of Deuteronomy.
7 We have acted very corruptly against you and have not kept the commandments, the statutes, and the rules that you commanded your servant Moses.