I saw this once before in a pagan d.v.d named "zeitgest",it said the story of jesus was taken from the story of joseph.Do you have any verses to show these parralels.The life of Joseph who was raised up in Egypt has many parallels (types and shadows) of Jesus Christ.
But what happens when you are talking to non believer?its better to have a verse to direct them too rather than telling them to read the whole book.This is one of the methods the early apostles used when they preached to the jews.The title of this thread makes no distinction between OT prophecy about Christ's coming and His literal appearance in OT times. If the subject was to only be about OT Scripture about Christ's advents, then that would cover most of the OT Scriptures as a whole. A truly learned Christian believer should be able to see The Gospel of Jesus Christ in just about every Book of the Old Testament, for it is there.