וַיֵּ֣לְכ֔וּ אַחֲרֵ֖י שְׁרִר֣וּת לִבָּ֑ם וְאַחֲרֵי֙ הַבְּעָלִ֔ים אֲשֶׁ֥ר לִמְּד֖וּם אֲבוֹתָֽם׃ (ס)
But have walked after the stubbornness of their own heart, And after the Baalim, which their fathers taught them.
Read kabbalistic (mystical) interpretation of Jeremiah 9:13: and classical mystical sources.