Isaiah 7:14-16

For this reason the sovereign master himself will give you a confirming sign. Look, this young woman is about to conceive and will give birth to a son. You, young woman, will name him Immanuel.  He will eat sour milk and honey, which will help him know how to reject evil and choose what is right.  Here is why this will be so: Before the child knows how to reject evil and choose what is right, the land whose two kings you fear will be desolate.

Isaiah goes to meet King Ahaz (of Judah), who is cowering in fear because two kings have joined forces to destroy Judah. The Lord tells Ahaz through Isaiah that the two kings will fail against Judah, and tells Ahaz this: "Unless your faith is firm, I cannot make you stand firm". (Isaiah 7:9b NLT) Ahaz is worried, and the Lord knows it. The Lord again sends a message to Ahaz telling him to request a sign of confirmation from God, as difficult as he wants. Isaiah 7:12 says, "But the king refused. 'No,' he said 'I will not test the Lord like that.'" It is not testing God if He tells you to ask for a sign. Today's verse is the Lord Himself giving a sign to Ahaz about the things to come. Through this experience, we catch yet another glimpse of the coming promise of Jesus Christ, the Messiah.