עָשָׂ֨ה יְהוָ֜ה אֲשֶׁ֣ר זָמָ֗ם בִּצַּ֤ע אֶמְרָתוֹ֙ אֲשֶׁ֣ר צִוָּ֣ה מִֽימֵי־קֶ֔דֶם הָרַ֖ס וְלֹ֣א חָמָ֑ל וַיְשַׂמַּ֤ח עָלַ֙יִךְ֙ אוֹיֵ֔ב הֵרִ֖ים קֶ֥רֶן צָרָֽיִךְ׃ (ס)
The LORD hath done that which He devised; He hath performed His word That He commanded in the days of old; He hath thrown down unsparingly; And He hath caused the enemy to rejoice over thee, He hath exalted the horn of thine adversaries.
Zohar
Rabbi Elazar went over to Rabbi Yosi, the son of Rabbi Shimon ben Lakunya, his father-in-law. As soon as he saw him, he spread carpets over planks of wood and prepared a canopy under which they both sat. His father-in-law asked him if, by any chance, he had learned from his father the meaning of the verse: "Hashem has done that which He devised; He has performed His word that He commanded in the days of old" (Eichah 2:17).