Isaiah 9:6 gives us great insight into the person and work of the promised Messiah. The person of Jesus Christ is the only One who fills the qualifications mentioned in this verse.
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)
First, He would be human (“a child is born”). Jesus fulfilled every requirement for being human.
Second, He also would be pre-existent (“a son is given”). In other words, the Son existed prior to the birth of the child. Jesus is co-eternal with God the Father (cf. John 8:58; Col. 1:16-17).
Third, He would bear the weight of the government. Israel is in mind here, given the context. The allusion could be to His bearing the cross imposed by the nation or His ultimate role as King of Israel or both.
Fourth, He would be called Wonderful, Counsellor. Whether these two terms should be taken separately or considered as one characteristic (a wonderful counselor) is open to debate. Regardless, that Jesus performed wonders (miracles) and gave excellent counsel is well documented in the Gospels and secular history.
Fifth, He would be called the mighty God. Jesus claimed equality with God (John 10:30-33). Thomas called Him God (John 20:28). Millions around the world acknowledge Him as God. Most importantly, God the Father called Him God (Heb. 1:8).
Sixth, He would be called the everlasting Father. In Hebrews 2:10-13, Jesus is said to bring “many sons unto glory” and Jesus refers to “the children which God hath given me”. As has already been stated, He is one with God the Father and therefore takes on the attributes of Him, including eternality.
Seventh, He would be called the Prince of Peace. “Prince” is translated from a general Hebrew term meaning “leader” or “ruler”. The Hebrew word for “peace” means “completeness” or “safety”. Jesus rules in a way that brings a sense of everything being alright. Jesus is the peace of the believer (Eph. 2:14) and peace in general (Eph. 2:15). Jesus gave believers the Holy Spirit who would continue His peace within them (John 14:26-27).
Each of these characteristics points us to the one, true Messiah—the Lord Jesus Christ.