כִּֽי־שִׂפְתֵ֤י כֹהֵן֙ יִשְׁמְרוּ־דַ֔עַת וְתוֹרָ֖ה יְבַקְשׁ֣וּ מִפִּ֑יהוּ כִּ֛י מַלְאַ֥ךְ יְהוָֽה־צְבָא֖וֹת הֽוּא׃
<span class="x" onmousemove="Show('perush','El Rambam explica esta parte del versículo en el <b>4º Capítulo</b> de Las Leyes del Estudio de la Torá.',event);" onmouseout="Close();"> Porque los labios de los sacerdotes han de guardar la sabiduría, y de su boca buscarán la ley; porque mensajero es del Señor de los ejércitos.</span>
Or Neerav
Previous [indications] in this matter [are] that one may not study Torah except from a messenger of the Lord of Hosts (Mal. 2:7), as our rabbis, their memory be a blessing, have taught.1Mo’ed Katan 17a: “If the master is like a ‘messenger of God,’ they should seek Torah from his mouth. If not, let them not seek Torah from his mouth.” They have also said that one should not learn from a magus.2Shabbat 75a: “He who learns one thing from a magus is worthy of death.” Besides that, there are two rules [to be followed] by those beginning in this science.