4. words—mere empty words.
swearing falsely in making a covenant—breaking their engagement to Shalmaneser (2Ki 17:4), and making a covenant with So, though covenants with foreigners were forbidden.
judgment … as hemlock—that is, divine judgment shall spring up as rank, and as deadly, as hemlock in the furrows (De 29:18; Am 5:7; 6:12). Gesenius translates, "poppy." Grotius, "darnel."