Isaiah 16:14

16:14 Now the Lord makes this announcement: “Within exactly three years Moab’s splendor will disappear, along with all her many people; there will be just a few, insignificant survivors left.”

Isaiah 20:3

20:3 Later the Lord explained, “In the same way that my servant Isaiah has walked around in undergarments and barefoot for the past three years, as an object lesson and omen pertaining to Egypt and Cush,

Isaiah 38:5

38:5 “Go 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 fifteen years to your life,