כִּֽי־יְ֭הוָה יִהְיֶ֣ה בְכִסְלֶ֑ךָ וְשָׁמַ֖ר רַגְלְךָ֣ מִלָּֽכֶד׃
대저 여호와는 너의 의지할 자이시라 네 발을 지켜 걸리지 않게 하시리라
Rashi
For the Lord shall be your trust Heb. בכסלך, in your trust. Another explanation: in the things concerning which you are a fool (כסיל). This I found in Yerushalmi.