"And the service garments" (Exodus 31:10). For were it not for the priestly garments, there would not have remained of the enemies of Israel [a euphemism for Israel itself] a survivor or a remnant. The school of Rabbi Yishmael taught: These are garments that they comb from their raw material into finished pieces, leaving over from them a portion that is not woven together with them; and this is the meaning of the term "serad" [woven service garments].
The Woven Service Garments That Kept Israel From Destruction
Yalkut Shimoni on Torah 390:2
(שמות לא י) וְאֵת בִּגְדֵי הַשְּׂרָד. שֶׁאִלְמָלֵא בִּגְדֵי כְּהֻנָּה, לֹא נִשְׁתַיְּרוּ מִשּׂוֹנְאֵיהֶם שֶׁל יִשְׂרָאֵל שָׂרִיד וּפָלִיט. תָּנָא דְּבֵי רַבִּי יִשְׁמָעֵאל. בְּגָדִים שֶׁגּוֹרְדִין אוֹתָם בִּבְרִיָּתָן מִכְּלֵיהֶן, וּמְשַׁיְּרִין מֵהֶן מִקְּצָת שֶׁאֵינוֹ אָרוּג עִמָּהֶן, וְזֶהוּ לְשׁוֹן שְׂרָד.