38 Speak to B’nei Yisrael and instruct them to make for themselves fringes on the corners of their garments throughout the ages; let them attach a cord of blue to the fringe at each corner.
da-BAYR el b’-NAY yis-ra-AYL v’-a-mar-TA a-lay-HEM v’-a-SU la-HEM tzee-TZIT al kan-FAY vig-day-HEM l’-do-ro-TAM v’-na-t’-NU al tzee-TZIT ha-ka-NAF p’-TEEL t’-KHAY-let
לח דַּבֵּר אֶל־בְּנֵי יִשְׂרָאֵל וְאָמַרְתָּ אֲלֵהֶם וְעָשׂוּ לָהֶם צִיצִת עַל־כַּנְפֵי בִגְדֵיהֶם לְדֹרֹתָם וְנָתְנוּ עַל־צִיצִת הַכָּנָף פְּתִיל תְּכֵלֶת׃
15:38 A cord of blue
The biblical blue color techelet (תכלת) is mentioned numerous times in the Bible. Rashi explains that this color, worn on the fringes known as tzitzit (ציצית) placed on the corners of four-cornered garments, is meant to remind us of the sky, and, by extension, of Hashem and His constant presence in our lives. For close to fifteen hundred years, the source of this special blue dye had been lost to the world. In an exciting discovery in recent years, marine biologists together with Talmudic researchers have identified the source of techelet as a small snail found off the coast of northern Israel, near Haifa. Today, for the first time in centuries, people are once again wearing techelet on their tzitzit. From even the smallest sea creature, we continue to see the wonders of the Bible come to life in Eretz Yisrael.