אַ֗ךְ לֹ֤א יַֽעֲלוּ֙ כֹּהֲנֵ֣י הַבָּמ֔וֹת אֶל־מִזְבַּ֥ח יְהוָ֖ה בִּירוּשָׁלִָ֑ם כִּ֛י אִם־אָכְל֥וּ מַצּ֖וֹת בְּת֥וֹךְ אֲחֵיהֶֽם׃
Nevertheless the priests of the high places came not up to the altar of the LORD in Jerusalem, but they did eat unleavened bread among their brethren.
Read midrashic interpretation of II Kings 23:9: and classical rabbinic exegesis.