1 tn Heb “the day of the joy of his heart.” In the genitive construct phrase וּבְיוֹם שִׂמְחַת (uvÿyom simkhat, “the day of joy”) the noun שִׂמְחָה (simkhah, “joy”) functions as a descriptive genitive of attribute (attributive genitive), that is, the genitive identifies the outstanding quality of the construct noun: “the joyous day” or “the day characterized by joy.” In the second genitive construct phrase שִׂמְחַת לִבּוֹ (simkhat livvo, “joy of his heart”) the noun לִבּוֹ (“his heart”) is a subjective genitive: “his heart rejoices.” The term לֵב (lev, “heart”) is a synecdoche of part for the whole (= Solomon himself), that is, “the day Solomon greatly rejoiced” or “the day of Solomon’s great joy.”