Matthew Poole and continuators on Jeremiah 2:26

26 As the thief is ashamed when he is found : so is the house of Israel ashamed ; they, their kings, their princes, and their priests, and their prophets .

Not ashamed of his sin of Theft, but that he is found, that his shifts, and blinds would serve him no longer; especially if he have had the reputation of an honest man.

Or Families the Twelve Tribes a Metonymy of the Subject.

Or confounded in the Passive voice, viz. when they shall be taken by Nebuchadnezzar, then their Idols, which they went a whoring after, shall be discovered, and so put them to shame; in the Active voice their inability to help them, verse 28. Isa. 1.29. Hos. 4.19. and their shame will be the more, because they had the repute of being my People.

Rulers, and Teachers, such as should have given better examples, and better instruction.