וּבֹ֛שׁוּ עֹבְדֵ֥י פִשְׁתִּ֖ים שְׂרִיק֑וֹת וְאֹרְגִ֖ים חוֹרָֽי׃
Moreover they that work in combed flax, And they that weave cotton, shall be ashamed.
Read Kabbalistic (mystical) interpretations of Isaiah 19:9: Zohar and classical Jewish mystical sources, free online.