2 Kings 20:8-11
And Hezekiah said to Isaiah, What shall be the sign that the LORD will heal me, and that I shall go up into the house of the LORD the third day?
Nave's Topical Index—AKJV

Isaiah 38:7,8
And this shall be a sign to you from the LORD, that the LORD will do this thing that he has spoken;
Nave's Topical Index—AKJV