כִּזְכֹּ֤ר בְּנֵיהֶם֙ מִזְבְּחוֹתָ֔ם וַאֲשֵׁרֵיהֶ֖ם עַל־עֵ֣ץ רַֽעֲנָ֑ן עַ֖ל גְּבָע֥וֹת הַגְּבֹהֽוֹת׃
Like the symbols of their sons are their altars, And their Asherim are by the leafy trees, Upon the high hills.
Read kabbalistic (mystical) interpretation of Jeremiah 17:2: and classical mystical sources.