They shall not teach (ou mh didaxwsin). Strong double negative (ou mh) with the first aorist active (futuristic) subjunctive of didaskw. His fellow-citizen (ton polithn autou). See Luke 15:15 ; Luke 19:14 . Know the Lord (Gnwqi ton kurion). Second aorist active imperative of ginwskw. In the new covenant all will be taught of God ( Isaiah 54:13 ; John 6:45 ), whereas under the old only the educated scribe could understand the minutiae of the law (Dods). See Paul's comparison in 2 Corinthians 3:7-18 . Shall know (eidhsousin). Future perfect active, old form of oida (note ginwskw just before of recognizing God), one of the rare future perfects (cf. 2 Corinthians 2:13 , esomai pepoiqw).