They — The Israelites. Their spot — The wickedness with which they are stained, is not of his children — Plainly shews they are not his children, but the devil's. God's children have no such spot. Indeed this text does not affirm, they have any spot at all. Perverse — Froward and untractable: Crooked — Irregular and disorderly.
Related Commentaries of Deuteronomy 32:5
Deuteronomy 32:5
5 They have corrupted themselves, their spot is not the spot of his children: they are a perverse and crooked generation.