Oh,for those who are gone and cannot be replaced (Aramic expression of sorrow at death of someone) / Woe for the loss!
Woe to those who were once great men and are no longer to be found (in Aramaic, "mischachin" means "to be found." In Hebrew, the word "mischachin" means "to be forgotten," as in, "people who were in the past and who continue to be remembered even now").
("The Holy One, the Blessed One, said to him (Moses): A rope for David, and not for the one who is forgotten. How often have I appeared to Abraham, and Jacob laughed at the God of my shadow, and they have not considered my ways, and have not asked me, What is your name?" - Sanhedrin Kiya, a.s., and so: "O, the lamentation of the hours, weep for all the hours of the week that they will not return, /a rope for David" - Yehuda Amichai/ Pain and confusion (the right)
Translation
Expression (Hebrew)
חֲבָל עַל דְּאָבְדִין וְלֹא מִשְׁתַּכְּחִין
Definition (Hebrew)
חֲבָל עַל אוֹתָם אַנְשֵׁי דְּגוּלִים שֶׁהָיוּ פַּעַם וְאֵינָם נִמְצָאִים יוֹתֵר (בַּאֲרָמִית מִשְׁתַּכְּחִין מַשְׁמָע נִמְצָאִים. בְּעִבְרִית קִבְּלָה הַמִּלָּה "משתכחין"משמעות שֶׁל "נִשְׁכָּחִים", כְּלוֹמַר 'אֲנָשִׁים שֶׁהָיוּ בֶּעָבָר וּמַמְשִׁיכִים לִזְכֹּר אוֹתָם גַּם כָּעֵת').
("אָמַר לוֹ הקב"ה (לְמֹשֶׁה):חֲבָל עַל דְּאָבְדִין וְלָא מִשְׁתַּכְחִין .הֲרֵי כַּמָּה פְּעָמִים נִגְלֵיתִי עַל אַבְרָהָם יִצְחָק וְיַעֲקֹב בְּאֵל שַׁדַּי וְלֹא הִרְהֲרוּ עַל מִדּוֹתַי וְלֹא אָמְרוּ לִי מַה שִּׁמְךָ "- סַנְהֶדְרִין קִיא ע"א, וְכֵן:"הוֹ, קִינַת הַשָּׁעוֹת, בָּכוּ לְכָל שָׁעוֹת הַשֶּׁבַע שֶׁלֹּא יָשׁוּבוּ,/חֲבָל עַל דְּאָבְדִין"-יְהוּדָה עַמִּיחַי/ דִּיּוּק הַכְּאֵב וְטִשְׁטוּשׁ הָאֹשֶׁר)