בַּיּ֣וֹם הַה֗וּא אַצְמִ֤יחַ קֶ֙רֶן֙ לְבֵ֣ית יִשְׂרָאֵ֔ל וּלְךָ֛ אֶתֵּ֥ן פִּתְחֽוֹן־פֶּ֖ה בְּתוֹכָ֑ם וְיָדְע֖וּ כִּי־אֲנִ֥י יְהוָֽה׃ (פ)
In that day will I cause a horn to shoot up unto the house of Israel, and I will give thee the opening of the mouth in the midst of them; and they shall know that I am the LORD.’
Read halakhic rulings (Jewish law) on Ezekiel 29:21: and classical halakhic sources.