Melachim Bais 20:4-6

Orthodox Jewish Bible

⁴ And it came to pass, before Yeshayah was gone out from the middle courtyard, that the Devar Hashem came to him, saying,

⁵ Shuv (return), and say to Chizkiyahu (Hezekiah) the Nagid Ami, Thus saith Hashem Elohei Dovid Avicha, I have heard thy tefillah, I have seen thy tears; hineni, I will heal thee; on Yom HaShelishi thou shalt go up unto the Beis Hashem.

⁶ And I will add unto thy days fifteen shanah; and I will save thee and this city out of the palm of Melech Asshur (Assyria); and I will defend this city for Mine Own sake, and for the sake of Dovid Avdi.