שַׂר־חֲמִשִּׁ֖ים וּנְשׂ֣וּא פָנִ֑ים וְיוֹעֵ֛ץ וַחֲכַ֥ם חֲרָשִׁ֖ים וּנְב֥וֹן לָֽחַשׁ׃
Obersten über Fünfzig, Angesehene und Ratgeber, Zauberverständige und Beschwörungskundige.
Rashi on Isaiah
counsellor One who knows how to intercolate the years and fix the months.
Rashi on Isaiah
skillful craftsman [explained by the Talmud as “wise of the deaf,” meaning that] when he commences [to speak of] words of Torah, all become as deaf [i.e., unable to refute his statement].