²¹ But my covenant I establish with Isaac, whom Sarah will bear to you at this set time next year."

⁷ This shall be the sign to you from Yahweh, that Yahweh will do this thing that he has spoken.

⁸ Behold, I will cause the shadow on the sundial, which has gone down on the sundial of Ahaz with the sun, to return backward ten steps. So the sun returned ten steps on the sundial on which it had gone down."'"