Deuteronomy 32:5
His people have acted corruptly toward Him; the spot on them is not that of His children, but of a perverse and crooked generation.
Berean Standard Bible
They have corrupted themselves, their spot is not the spot of his children: they are a perverse and crooked generation.
They have dealt corruptly with him. They are not his children, because of their defect. They are a perverse and crooked generation.