King James Version (KJV)
In that day shall thy mouth be opened to him which is escaped, and thou shalt speak, and be no more dumb: and thou shalt be a sign unto them; and they shall know that I {am} the LORD.
Modern English
In that day your mouth will be opened to him who has escaped, and you shall speak, and be no more mute. So you will be a sign to them. Then they will know that I am Yahweh.”
Hebrew
בַּיּ֣וֹם הַה֗וּא יִפָּ֤תַח פִּ֙יךָ֙ אֶת־הַפָּלִ֔יט וּתְדַבֵּ֕ר וְלֹ֥א תֵֽאָלֵ֖ם ע֑וֹד וְהָיִ֤יתָ לָהֶם֙ לְמוֹפֵ֔ת וְיָדְע֖וּ כִּֽי־אֲנִ֥י יְהוָֽה׃
bayvom hahvʾ yipataḥ piyka ʾet-hapaliyṭ vtdaber vloʾ teʾalem ʿvod vhayiyta lahem lmvopet vyadʿv kiy-ʾaniy yhvah