Psalms 78:64 Halakhah

כֹּ֭הֲנָיו בַּחֶ֣רֶב נָפָ֑לוּ וְ֝אַלְמְנֹתָ֗יו לֹ֣א תִבְכֶּֽינָה׃

Their priests fell by the sword; And their widows made no lamentation. .

Read halakhic rulings (Jewish law) on Psalms 78:64: and classical halakhic sources.