13 Just as you, Judah and Israel, have been a cursea among the nations, so I will save you, and you will be a blessing.b Do not be afraid, but let your hands be strong.”

Read Zechariah 8:13 Using Other Translations

And it shall come to pass, that as ye were a curse among the heathen, O house of Judah, and house of Israel; so will I save you, and ye shall be a blessing: fear not, but let your hands be strong.
And as you have been a byword of cursing among the nations, O house of Judah and house of Israel, so will I save you, and you shall be a blessing. Fear not, but let your hands be strong."
Among the other nations, Judah and Israel became symbols of a cursed nation. But no longer! Now I will rescue you and make you both a symbol and a source of blessing. So don’t be afraid. Be strong, and get on with rebuilding the Temple!