וְהָיָ֗ה בְּכָל־יַחֵם֮ הַצֹּ֣אן הַמְקֻשָּׁרוֹת֒ וְשָׂ֨ם יַעֲקֹ֧ב אֶת־הַמַּקְל֛וֹת לְעֵינֵ֥י הַצֹּ֖אן בָּרֳהָטִ֑ים לְיַחְמֵ֖נָּה בַּמַּקְלֽוֹת׃
每逢羊群中那些早配的母羊發情時，雅各就把那些枝子放在水溝裡，在羊群眼前，使牠們對著枝子發情交配。
Ibn Ezra
הנחמים באלים The best of the various explanations of this phrase is that it refers to idolatry;4The noun אלים signifies here trees under which idols were worshipped. See Rashi and Targum ad locum. הנחמים Who are conceived, similar in form to הנצבים that stood (Gen. 45:1), is the Niphal of יחם to conceive; comp. בכלּ יַחֵם whensoever (the stronger cattle) did conceive (Gen. 30:41). This expression is the description of children of transgression (ver. 4); comp., And in sin did my mother conceive me (Ps. 51:7).