God is faithful. He always keeps His promises. 700 years prior to the birth of Christ, a promise from God, a prophecy from the mouth of Isaiah entered into history:
Therefore the Lord Himself will give you a sign: Behold, a virgin will be with child and bear a so, and she will call His name Immanuel.”
According to Matthew 1:18-23, God with us is our only hope. Jesus is our Immanuel. He will save His people from their sins (1:21).