וַיִּסֹּ֣גוּ וַֽ֭יִּבְגְּדוּ כַּאֲבוֹתָ֑ם נֶ֝הְפְּכ֗וּ כְּקֶ֣שֶׁת רְמִיָּֽה׃
But turned back, and dealt treacherously like their fathers; They were turned aside like a deceitful bow.
Read kabbalistic (mystical) interpretation of Psalms 78:57: and classical mystical sources.