Isaiah points to Jesus' birth and the role he would have in God's purpose as very significant! Yes, Jesus would become a mighty ruler. He would be called Prince of Peace, and there would be no end to peace or to his princely rule. This grand rulership would be sustained "by means of justice and by means of righteousness."
Please compare Isaiah's prophecy, to the words of the angel Gabriel spoke to Mary, "This one will be great and will be called Son of the Most High...And Jehovah God will give him the throne of David his father, and he will rule as king over the house of Jacob forever, and there will be no end of his kingdom." -Luke 1:32, 33
The main significance of Jesus' birth lay in the work that Christ would accomplish as the appointed King of God's Kingdom. Christ's rule can benefit all. In fact, the angels that sang to the shepherds showed that his birth would bring, "peace on earth to those with whom God is pleased."- Luke 2:14, Today's English Version
This is a good time to refresh our memory of these words of Jesus. As you read, imagine you are there among the crowd of people, perhaps you like many others have traveled a great distance and are now on the mountainside eager to hear Jesus speak. First, Jesus begins by healing all in attendance, when each one is free of pain and illness, he sits down and begins to teach. To give weight to his teachings, he does not point to Jewish oral traditions nor to any well-known Jewish rabbis. Instead he repeatedly quotes from the Hebrew Scriptures (Old Testament). The message he presents is straightforward, his wording simple, his meaning clear. When he is finished the crowd is astounded! They have just listened to the wisest man who ever lived! -Matthew 7:28, 29My dear family who I love! Continue to build up your knowledge of Christ Jesus, reading the eyewitness accounts of Jesus life and message as recorded in your own Bible, for in Jesus are "all the treasures of wisdom"-Colossians 2:3. (compare: John 17:3)