Unlike other religious leaders Jesus was told about in some detail in prophecy before he was born. The Dead Sea Scrolls are ancient manuscripts that were discovered in 1948. They are proof that the Old Testament books date back before Jesus was born. This means they could not have been written afterwards to merely make it look as though Jesus fulfilled these prophecies. The Dead Sea Scrolls contain a portion of every book in the Old Testament with the exception of Ester.
           Some people don't think that the stories about Jesus in the New Testament are true. However there are other historical records besides the Bible that provide evidence that Jesus was in fact a real person. I would like to point out that the stories concerning Jesus in the New Testament were being circulated in the same area where Jesus lived and traveled. It was here that the church was established and grew. This took place in the same time frame among the same people that knew Jesus before he was crucified. If the events that are recorded in the New Testament were manufactured or highly exaggerated, the church growth should have been nearly impossible. Even as we see in the book of Acts the people that lived there in that era and objected to Christianity did not deny that Jesus taught and did these things recorded in the New Testament letters. The Jews considered the teachings blasphemous or ludicrous and commanded the disciples to be quiet. However they acknowledged that Jesus did in fact teach such things and perform what the people considered miracles.
           In a court of law when the hostile witness agrees with the defense it is considered a fact. In other words lets say there is a murder trial. The prosecuting attorney said that David murdered Albert. The defense gets up and says David did indeed kill Albert, but it was an accident. Since both sides agree that David killed Albert, this would be considered a fact, and it would not be called into question. Since the actual events regarding Jesus' ministry and crucifixion are not disputed by those opposed to Christianity in that time frame, the events themselves should be considered fact. Following are some prophecies concerning Jesus Christ in the Old Testament before he was born and the fulfillment by him in the New Testament. You can find this and other prophecies that Jesus fulfilled in greater detail in Josh McDowell's book Evidence that Demands a Verdict. This book also supplies an abundance of evidence for the reliability of the Bible. Keep in mind I am only mentioning a few of the prophecies concerning the Messiah that were fulfilled in Jesus. Fritz Ridenour in the book "Who says?" declares that there are some 333 prophecies concerning the Messiah which are fulfilled in Jesus Christ. (Scripture is from the NASB)

1.  BORN OF A VIRGIN.
PROPHECY      Isa 7:14   
"Therefore the Lord Himself will give you a sign: behold, a virgin will be with child and bear a son, and she will call His name Immanuel.
FULFILLMENT     Matt 1:18-25   (see also LK.1:26-35)   
Now the birth of Jesus Christ was as follows. When His mother Mary had been betrothed to Joseph, before they came together she was found to be with child by the Holy Spirit.
And Joseph her husband, being a righteous man, and not wanting to disgrace her, desired to put her away secretly. But when he had considered this, behold, an angel of the Lord appeared to him in a dream, saying, "Joseph, son of David, do not be afraid to take Mary as your wife; for that which has been conceived in her is of the Holy Spirit.