There is no answer, for the wise men are ashamed (Jeremiah 8:9); so Jehovah himself takes up his speech. My law which I set before them; not in reference to the publication of the Law on Sinai, but, as Keil rightly points out, to the oral exhibition of the Torah by the prophets.
Neither walked therein; viz. in the Law. (On the precise contents of the term here rendered "Law," see note on Jeremiah 8:8.