Actually the gospel accounts are not precisely accurate in that the four gospels have slight discrepancies. As a genealogist this is one aspect that truly excites me. What we have here are eyewitness accounts recorded in these gospels. The slight inaccuracies are proof that they are not fabricated (otherwise they would perfectly match) and are events actually witnessed by humans. If four people write down accounts of any event there will be small insignificant differences. These events actually happened. As Christians we know this but every once in a while I do marvel at it.