כִּ֤י אִם־עֲוֺנֹֽתֵיכֶם֙ הָי֣וּ מַבְדִּלִ֔ים בֵּינֵכֶ֕ם לְבֵ֖ין אֱלֹֽהֵיכֶ֑ם וְחַטֹּֽאותֵיכֶ֗ם הִסְתִּ֧ירוּ פָנִ֛ים מִכֶּ֖ם מִשְּׁמֽוֹעַ׃
Sondern eure Missetaten machten eine Scheidung zwischen euch und eurem Gotte, und eure Sünden haben sein Antlitz verhüllt vor euch, dass er nicht [auf euer Flehen] hörte.
Rashi on Isaiah
have caused [Him] to hide [His] face They caused for you that He hid His face from you.
Ibn Ezra on Isaiah
לבין And (lit., between). It is a compound of ל and בין, each of which alone would suffice.
Ibn Ezra on Isaiah
Have hid His face. This is a figurative expression, taken from man covering his face and closing his ears when he is unwilling to see or to hear.