Deuteronomy 32:5

32:5 They have dealt corruptly with him, [they are] not his children, [it is] their blemish; [They are] a perverse and crooked generation.
-World English Bible

Other Translation

32:5 They have corrupted themselves, their spot [is] not [the spot] of his children: [they are] a perverse and crooked generation.
-King James Version