They; either,
1. The enemies last mentioned, who are foolish people, and therefore make so false and foolish a judgment upon things. Or rather,
2. The Israelites themselves, of whom he speaks both in the foregoing Deuteronomy 32:26, and in the whole foregoing chapter, and in the next verse Deuteronomy 32:29, and afterwards. Void of counsel; that have not wisdom to direct themselves, nor discretion to desire and receive counsel from others, but rashly and madly go on in those courses which will certainly ruin them.