King James Version (KJV)
In that day it shall be said to Jerusalem, Fear thou not: {and to} Zion, Let not thine hands be slack. {slack: or, faint}
Modern English
In that day, it will be said to Jerusalem, “Don’t be afraid, Zion. Don’t let your hands be weak.”
Hebrew
בַּיּ֣וֹם הַה֔וּא יֵאָמֵ֥ר לִירֽוּשָׁלַ֖͏ִם אַל־תִּירָ֑אִי צִיּ֖וֹן אַל־יִרְפּ֥וּ יָדָֽיִךְ׃
bayvom hahvʾ yeʾamer liyrvshala͏im ʾal-tiyraʾiy ṣiyvon ʾal-yirpv yadayik