Isaiah 19:11

Surely … fools Mere fools are the princes of Zoan. Zoan (Tanis, between the two most easterly mouths of the Nile), an ancient city (Numbers 13:22), had played an important part in Egyptian history. Formerly the seat of the Hyksos kings, it had subsequently given its name to two native dynasties (21st and 23rd). Partly because of its proximity to Canaan it is frequently mentioned in the O.T. as representing Egypt. The next clause runs literally: the wisest counsellors of Pharaoh stupid counsel (sc. is theirs)!

how say ye unto Pharaoh The wisdom of Egypt was the hereditary possession of the priestly caste to which the early dynasties belonged. The counsellors are here introduced boasting of the purity of their descent from these kings and sages of the olden time. Read (in both cases) a son.