ה֗וֹי כִּ֥י גָד֛וֹל הַיּ֥וֹם הַה֖וּא מֵאַ֣יִן כָּמֹ֑הוּ וְעֵֽת־צָרָ֥ה הִיא֙ לְיַֽעֲקֹ֔ב וּמִמֶּ֖נָּה יִוָּשֵֽׁעַ׃
Alas! for that day is great, So that none is like it; And it is a time of trouble unto Jacob, But out of it shall he be saved.
Read halakhic rulings (Jewish law) on Jeremiah 30:7: and classical halakhic sources.