Isaiah answered, "This is the LORD's sign to you that the LORD will do what he has promised: Shall the shadow go forward ten steps, or shall it go back ten steps? (2 Kings 20:9)
Hezekiah became ill and was at the point of death. The prophet Isaiah went to him and said, "This is what the LORD says: Put your house in order, because you are going to die; you will not recover." Hezekiah turned his face to the wall and prayed to the LORD, "Remember, O LORD, how I have walked before you faithfully and with wholehearted devotion and have done what is good in your eyes." And Hezekiah wept bitterly. Before Isaiah had left the middle court, the word of the LORD came to him: "Go back and tell Hezekiah, the leader of my people, 'This is what the LORD, the God of your father David, says: I have heard your prayer and seen your tears; I will heal you. On the third day from now you will go up to the temple of the LORD."
Then Hezekiah asked Isaiah, "What will be the sign that the LORD will heal me and that I will go up to the temple of the LORD on the third day from now?" And to this question, Isaiah gave the reply that we read in the title verse. Isaiah told him that the Lord will give him a sign...in the form of a miracle....LORD made the shadow go back the ten steps it had gone down on the stairway of Ahaz (the sundial of Ahaz) .
Are you waiting for a sign from the Lord regarding a promise that the Lord has given you? It will come soon. You will see a miracle. Keep praying, for the Lord is at work. He will fulfill his promise to you.