The princes of Zoan were foolish because they did not take God into account. The so-called wise men of Egypt were not wise at all, and Isaiah expresses disbelief that they could boast of their wisdom. They were utterly unable to help in time of crisis.
11 Les princes de Tsoan ne sont que des insensés, Les sages conseillers de Pharaon forment un conseil stupide. Comment osez-vous dire à Pharaon: Je suis fils des sages, fils des anciens rois?