Hebrew Bible

Isaiah 38:5

3 “Please, Lord. Remember how I have served you faithfully and with wholehearted devotion, and how I have carried out your will.” Then Hezekiah wept bitterly. 4 The Lord’s message came to Isaiah, 5Go and tell Hezekiah: ‘This is what the Lord God of your ancestor David says: “I have heard your prayer; I have seen your tears. Look, I will add 15 years to your life. 6 I will also rescue you and this city from the king of Assyria. I will shield this city.”’” 7 Isaiah replied, “This is your sign from the Lord confirming that the Lord will do what he has said:

Date: 7th-5th Centuries B.C.E.
* Dates are based on scholarly estimates
Deuterocanon

Sirach 48:22

Ben Sira, Ecclesiasticus

20 But they called upon the Lord who is merciful, spreading out their hands toward him. The Holy One quickly heard them from heaven, and delivered them through Isaiah. 21 The Lord struck down the camp of the Assyrians, and his angel wiped them out. 22 For Hezekiah did what was pleasing to the Lord, and he kept firmly to the ways of his ancestor David, as he was commanded by the prophet Isaiah, who was great and trustworthy in his visions. 23 In Isaiah's days the sun went backward, and he prolonged the life of the king. 24 By his dauntless spirit he saw the future, and comforted the mourners in Zion.

Date: 195-175 B.C.E.
* Dates are based on scholarly estimates