וְאָֽנֹכִי֙ נְטַעְתִּ֣יךְ שֹׂרֵ֔ק כֻּלֹּ֖ה זֶ֣רַע אֱמֶ֑ת וְאֵיךְ֙ נֶהְפַּ֣כְתְּ לִ֔י סוּרֵ֖י הַגֶּ֥פֶן נָכְרִיָּֽה׃
Yet I had planted thee a noble vine, Wholly a right seed; How then art thou turned into the degenerate plant Of a strange vine unto Me?
Read Jewish philosophy on Jeremiah 2:21: Rambam's Guide for the Perplexed, Saadia Gaon, and classical Jewish philosophical sources, free online.