For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor, The mighty God, The everlasting Father, The Prince of Peace. Isaiah 9:6
Most Christians believe that this verse refers to Jesus.
And apparently, so did
Joseph SmithNephi, since he copied this verse in 2 Nephi 19:6
Melchizedek ... was called the prince of peace. Alma 13:18