2 Kings 20:4-5

4Then it came to pass, before Isaiah was gone out of the middle court, that the word of Adonai came to him, saying:

5“Return, and say to Hezekiah the leader of My people, thus says Adonai, the God of your father David: ‘I have heard your prayer and I have seen your tears. Behold, I am going to heal you. On the third day you will go up to the House of Adonai.