ποιμανεῗς αὐτοὺς ἐν ῥάβδῳ σιδηρᾷ ὡς σκεῦος κεραμέως συντρίψεις αὐτούς
translating litterim at least the expression ὡς σκεῦος κεραμέως I gain:
You will break them with a rod of iron; you will dash them to pieces like the recipient of a potter.”
Isn't the potter the expression used by anti-demiurgists to despise the evil demiurge?