Jesus is the Prince of Peace

For to us a child is born, to us a son is given; and the government shall be upon his shoulder, and his name shall be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace. (Isaiah 9:6).

Part 1 - For unto us a child is born
Part 2 - A Son is given
Part 3 - And the government shall be upon his shoulder
Part 4 - 'and his name shall be called Wonderful Counselor'
Part 5 - Mighty God
Part 6 - The Everlasting Father: the Father of eternity
Part 7 - Jesus is the Prince of Peace 

This is a multi-part series looking at this wonderful verse of scripture from Isaiah and commentary from Barnes' Notes. I'd said that for me, the text is rich and full of truth; complex with spiritual meaning, yet can be read and understood by children; is a great a promise, one even spoken as had already happened, yet would not occur for hundreds of years hence; a faithful promise, and a comforting thought. Barnes Notes on the last part of the verse, 'Prince of Peace'-

The Prince of Peace - This is a Hebrew mode of expression denoting that he would be a peaceful prince. The tendency of his administration would be to restore and perpetuate peace. This expression is used to distinguish him from the mass of kings and princes who have delighted in conquest and blood. In contradistinction from all these, the Messiah would seek to promote universal concord, and the tendency of his reign would be to put an end to wars, and to restore harmony and order to the nations; see the tendency of his reign still further described in Isaiah 11:6-9; the note at Isaiah 2:4; see also Micah 5:4; Hosea 2:18. It is not necessary to insist on the coincidence of this description with the uniform character and instructions of the Lord Jesus. In this respect, he disappointed all the hopes of the Jewish nation, who, in spite of the plain prophecies respecting his peaceful character, expected a magnificent prince, and a conqueror.

Gill's Exposition:

The Prince of peace; Christ is a Prince, often so called, Ezekiel 34:24 he is so by birth, being the King's Son, the Son of God, and by office, power, and authority; he is so a Prince as that he is a King; he is exalted to be a Prince and a Saviour; and he is a Prince superior to kings, being the Prince of the kings of the earth, Acts 5:31 and he is called the "Prince of peace", because he is the author of peace; just as he is said to be the "Prince of life", Acts 3:15 for the same reason:

he is the author of peace between Jew and Gentile, by abrogating the ceremonial law, the enmity between them, and by sending the Gospel to both, and making it the power of God to salvation to some of each of them, and by bringing them into the same Gospel church state, and making them partakers of the same privileges and blessings, internal and external, Ephesians 2:14 and he is the author of peace between God and sinners; he has made it by the blood of the cross, having the chastisement of their peace laid upon him, in consequence of a covenant of peace he made with his Father, who was in him reconciling the world to himself, and he is so called likewise, because he is the giver of peace; of all outward peace and prosperity to his churches, as rest from their enemies, concord among themselves, and additions to them of such as shall be saved; of internal peace through the discoveries of his love, and the application of his righteousness, blood, and sacrifice in a way of believing in him, and in a course of obedience to him; and likewise of eternal peace and rest in the world to come.

Moreover, all that concern him as a King or Prince show him to be the Prince of peace: his kingdom lies, among other things, in peace and joy in the Holy Ghost; the sceptre of his kingdom is the golden sceptre of grace and mercy; his royal proclamation is the Gospel of peace; the fruit of his Spirit is peace; and his subjects are peaceable ones, both in church and state.