Lamentations 4:17 Halakhah

עודינה [עוֹדֵ֙ינוּ֙] תִּכְלֶ֣ינָה עֵינֵ֔ינוּ אֶל־עֶזְרָתֵ֖נוּ הָ֑בֶל בְּצִפִּיָּתֵ֣נוּ צִפִּ֔ינוּ אֶל־גּ֖וֹי לֹ֥א יוֹשִֽׁעַ׃ (ס)

As for us, our eyes do yet fail For our vain help; In our watching we have watched For a nation that could not save.

Read halakhic rulings (Jewish law) on Lamentations 4:17: and classical halakhic sources.