שׁ֗וּבוּ לַאֲשֶׁ֛ר הֶעְמִ֥יקוּ סָרָ֖ה בְּנֵ֥י יִשְׂרָאֵֽל׃
קערט אײַך אום צו װעמען איר האָט טיף װידערשפּעניקט, קינדער פֿון ישׂראל.
Rashi
Return To the One about Whom you have thought deeply how to turn away from Him, now return to Him.
Ibn Ezra
Turn ye unto him, etc. The prophet, addressing Israel, says: Return, ye Israelites, to God, from whom you have deeply revolted. סרה is derived from סרר to revolt. Comp. סורר rebellious (Deut. 21:18)