וְהָ֥יָה צֶ֖דֶק אֵז֣וֹר מָתְנָ֑יו וְהָאֱמוּנָ֖ה אֵז֥וֹר חֲלָצָֽיו׃
Das Recht wird sein seiner Lenden Gurt und die Treue der Gurt seiner Hüften.
Rashi on Isaiah
And righteousness shall be the girdle of his loins Jonathan [renders:] And the righteous shall surround him; i.e., they will cleave to him like a girdle.
Ibn Ezra on Isaiah
And righteousness shall be, etc. And uprightness will never depart from him in all his doings.