Harvard Law professor and attorney Simon Greenleaf wrote a book called
The Testimony of the Evangelists Examined by the Rules of Evidence Administrated in Courts of Justice. In addition to demonstrating why the Gospel accounts would be acceptable in a court of law, the 1874 edition featured a section called Harmony of the Gospels, which chronologically reconciled the testimonies from the King James Bible and addressed alleged discrepancies.
Regarding the differences in the accounts, Greenleaf wrote in § 34, The character of their narratives is like that of all other true witnesses, containing -- as Dr. [William] Paley observes -- substantial truth, under circumstantial variety. [From
A View of the Evidences of Christianity, 1794. See
Appendix 2.] There is enough of discrepancy to show that there could have been no previous concert among them; and at the same time such substantial agreement as to show that they all were independent narrators of the same great transaction, as the events actually occurred.
http://www.tektonics.org/harmonize/greenharmony.htm
There are different accounts , but they harmonize.
If Christianity was a big fraud, then then why would the bible even contain different accounts which at fist glance are contradictory. That's a pretty bad conspiracy!