וְהָיָ֥ה לָכֶ֛ם מָע֥וֹז פַּרְעֹ֖ה לְבֹ֑שֶׁת וְהֶחָס֥וּת בְּצֵל־מִצְרַ֖יִם לִכְלִמָּֽה׃
Therefore shall the stronghold of Pharaoh turn to your shame, and the shelter in the shadow of Egypt to your confusion.
Ibn Ezra on Isaiah
והחסות And the trust. A noun; it is the contracted form of 4The י in חסיות is substituted for the third radical ה, of נלות ;חסה captivity (Obad. 20) is formed of נלה in a similar manner, with the entire omission of the third radical.חסיות; comp. עבדות slavery (Ezr. 9:8)