Isaiah 7:10-14

10 Yahweh spoke again to Ahaz, saying,  11 "Ask a sign of Yahweh your God; ask it either in the depth, or in the height above."

12 But Ahaz said, "I will not ask, neither will I tempt Yahweh."

13 He said, "Listen now, house of David: Is it not enough for you to try the patience of men, that you will try the patience of my God also?  14 Therefore the Lord himself will give you a sign. Behold, the virgin will conceive, and bear a son, and shall call his name Immanuel.