Are Wonderful, Counselor, Mighty God, Everlasting Father, and Prince of Peace titles of Jesus?
Yes. Isaiah 9:6-7 speaks of the child born and son given to Israel, the Messiah, whose government shall be upon His shoulder. The capitalized names—Wonderful, Counselor, Mighty God, Everlasting Father, and Prince of Peace—are all titles of the Christ, the Messiah.
Les explains that Isaiah 9:6-7 is part of the Old Testament prophecies looking forward to the coming kingdom. He says the child born and son given to the nation of Israel is the Messiah, and the government shall be upon His shoulder. He notes the names are capitalized—Wonderful, Counselor, the Mighty God, the Everlasting Father, the Prince of Peace—and states these are all titles of the Christ, the Messiah. Verse 7 adds that of the increase of His government and peace there shall be no end, and He will rule from the throne of David.
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.