As the angels sang glory to God in the highest, the lyrics to their chorus included "peace on earth, good will to men." With the birth of the savior into the world, the prince of peace introduced himself to humanity.
In the Hebrew, the word for peace, Shalom, indicates more than what we generally attribute peace to be. It is more than just a quietness or an absence of confusion. Peace represents wholeness and completion. So when the angels sang of peace on earth, they were telling us that with Jesus comes wholeness and completion.
Immanuel, God with us, ushered in peace personified, manifested as one of his own creation.
When we truly find Jesus, we find a peace that is beyond natural understanding. It is a peace that the world can not comprehend, yet is available to all.
This is why he came -in the humblest of beginnings- to give us peace, to make us whole, and to abolish fear with his perfect love.
Orthodox Jewish Bible (OJB)
6 (5) For unto us a yeled is born, unto us ben is given; and the misrah (dominion) shall be upon his shoulder; and Shmo shall be called Peleh (Wonderful), Yoetz (Counsellor), El Gibbor (Mighty G-d), Avi Ad (Possessor of Eternity), Sar Shalom (Prince of Peace).