content: Christianity is nothing without Old Testament prophecies.  If Christians decide that the Old Testament is "outdated," or, "not relevant to Christianity," then said Christians are disowning the only holy foundation to date.  Without the Old Testament, Jesus was just a mortal that performed slight of hand to the feeble and illiterate.  The Old Testament is the only reference to which Jesus was the son of god.  Anyone that says the Old Testament is to be ignored has never read the Bible to completion, and has only used the Bible to cherry pick arguments.