 Lavi is credited with the founding of the Tripoli Jewish community's religious institutions, the revival of Torah study, and the establishment of "takkanot" (Jewish community regulations).Serving as a posek and "dayan" (rabbinical court judge), Lavi put the rabbinical court on a firm footing and appointed more judges to lead the community into the future.In later generations, Tripoli Jews had the custom of reciting a memorial prayer every Yom Kippur eve on behalf of all the judges who had served on the rabbinical court from Lavi's time to the present.