On December 25, 1369 (5129), King Frederick III of Sicily ordered all Jews to wear a badge indicating their heritage. The badge consisted of a piece of red material, not smaller than the largest royal seal; men were required to wear it under the chin, and women on the chest.
G‑d desires to have a presence in this world, and in each mitzvah we do, however it is done, He is there.
G‑d desires that His light shine in this world, and in every word of divine wisdom and every heartfelt prayer, His light shines.
G‑d desires yet more—that He be found here in all His essence, that which can neither be spoken nor kept silent, neither of heaven nor of earth, neither of being nor of not-being—that which transcends all of these and from which all extends.
And that is how He is found in a simple, physical deed that shines brightly with divine light.