Jesus is the Messiah: The virgin will conceive and give birth to a son, and will call him Immanuel. Isaiah 7:14

Isaiah is the prince of the prophets, with his prophecies and visions he anticipates the birth of the Messiah, also called Immanuel:
"Therefore the Lord himself will give you a sign: The virgin will conceive and give birth to a son, and will call him Immanuel. He will be eating curds and honey when he knows enough to reject the wrong and choose the right, for before the boy knows enough to reject the wrong and choose the right, the land of the two kings you dread will be laid waste" Isaiah 7:14-16.
About this miraculous child, who must establish a new and everlasting Kingdom or dominion, he also tells us:
"For to us a child is born, to us a son is given, and the government will be on his shoulders. And he will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace. Of the greatness of his government and peace there will be no end.
He will reign on David's throne and over his kingdom, establishing and upholding it with justice and righteousness from that time on and forever.
The zeal of the LORD Almighty will accomplish this." Isaiah 9:6-8.

Solomon was the last Prophet King to personify the Kingdom of Heaven, and his descendants because of his sins could not continue with the unity of the chosen people.
This is why the prophet anticipates that a descendant of King David would be in charge of restoring unity, but this Kingdom would not be based on a physical territory (the kingdom of Israel) but on a new covenant based on the spiritual gifts of God: the counsel (listen, meditate, decide), the mercy (compassion, gentleness, kindness), the piety (constancy, firmness, devotion).
All these prophecies are related to the arrival of Jesus and faithfully describe the mission of the messiah in the world: liberate and redeem men from oppression, lies and deception.
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