Jesus fulfilled all the prophecies about the messiah
Jesus fulfilled all the prophecies concerning the messiah uttered by the prophets under the old convenant (in the Old Testament).
The phophet Isaiah prophesied that a virgin would give birth to the messiah.
Mary was a virgin when Jesus Christ was conceived of the Holy Spirit in her womb. Joseph wanted to break up with her.
But while he thought about these things, behold, an angel of the Lord appeared to him in a dream, saying, "Joseph, son of David, do not be afraid to take to you Mary your wife, for that which is conceived in her is of the Holy Spirit." (Matthew 1:20, NKJV).
The prophet Micah prophesied that the messiah would come forth from Bethlehem of Judea.
Jesus was born in Bethlehem of Judea in the days of Herod the king, as Joseph of the lineage of David had to be registered with Mary in Bethlehem because of the census decreed by Caesar Augustus;
"But you, Bethlehem Ephrathah, Though you are little among the thousands of Judah, Yet out of you shall come forth to Me The One to be Ruler in Israel, Whose goings forth are from of old, From everlasting." (Micah 5:2, NKJV).
The phophet Isaiah announced the birth of the son of God:
For unto us a Child is born, Unto us a Son is given; And the government will be upon His shoulder. And His name will be called Wonderful, Counselor, Mighty God, Everlasting Father, Prince of Peace. (Isaiah 9:6, NKJV)
The prophet Hosea predicted the events after Jesus was born
After Jesus' birth, Joseph, Mary and the baby Jesus went to Egypt to flee King Herod who wanted to kill the child. They returned to Galilee after he died. "And out of Egypt I called My son." (Hosea 11:1-b, NKJV)
Jesus said that he came to do his Father's will.
Jesus fulfilled Isaiah's prophecy concerning the messiah preaching the good news and healing many
Jesus Christ read this prophecy to the Jews in the synagogue as a reminder :
The Spirit of the Lord GOD is upon Me, Because the LORD has anointed Me To preach good tidings to the poor; He has sent Me to heal the brokenhearted, To proclaim liberty to the captives, And the opening of the prison to those who are bound; To proclaim the acceptable year of the LORD, And the day of vengeance of our God; To comfort all who mourn (Isaiah 61:1-2, NKJV)
The gospels in the bible report the many deliverances from the oppression of the devil and healings and ressurection from the dead that Jesus performed;
"So He came to Nazareth, where He had been brought up. And as His custom was, He went into the synagogue on the Sabbath day, and stood up to read. And He was handed the book of the prophet Isaiah. And when He had opened the book, He found the place where it was written: "The Spirit of the LORD is upon Me, Because He has anointed Me To preach the gospel to the poor; He has sent Me to heal the brokenhearted, To proclaim liberty to the captives And recovery of sight to the blind, To set at liberty those who are oppressed; To proclaim the acceptable year of the LORD." Then He closed the book, and gave it back to the attendant and sat down. And the eyes of all who were in the synagogue were fixed on Him. And He began to say to them, "Today this Scripture is fulfilled in your hearing." (Luke 4:16-21, NKJV)
The sufferings of Christ
The prophet Isaiah predicted the sufferings of Christ and his death to atone for the sins of men.
He is despised and rejected by men, A Man of sorrows and acquainted with grief. And we hid, as it were, our faces from Him; He was despised, and we did not esteem Him. Surely He has borne our griefs And carried our sorrows; Yet we esteemed Him stricken, Smitten by God, and afflicted. But He was wounded for our transgressions, He was bruised for our iniquities; The chastisement for our peace was upon Him, And by His stripes we are healed. (Isaiah 53:3-5, NKJV)
Jesus is risen from the dead
David predicted Jesus Christ's resurrection. David didn't speak of himself when he said that his soul would not be abandoned but of Christ:
"For You will not leave my soul in Sheol, Nor will You allow Your Holy One to see corruption. You will show me the path of life; In Your presence is fullness of joy; At Your right hand are pleasures forevermore." (Psalm 16:10-11, NKJV).
David died and was buried with his ancestors whereas Jesus Christ was raised from the dead as testified by Paul:
For David, after he had served his own generation by the will of God, fell asleep, was buried with his fathers, and saw corruption; but He whom God raised up saw no corruption. Therefore let it be known to you, brethren, that through this Man is preached to you the forgiveness of sins; and by Him everyone who believes is justified from all things from which you could not be justified by the law of Moses. (Acts 13:36-39, NKJV)