The Bible is a copy of Sumerian myths, especially the Gilgamesh Epic, combined with the history of the Semetic Nation Israel, mixed with Egyptian, Babylonian, and Greek theology.
Indeed the Catholic Church along with the Orthodox(since at that time we had One United Church the East and West Rome) they will have face the new Books that archaiology is finding lately, starting with the Gnostic Gospels that they rejected at Nicaia in 330 A.D.and then completely vanished at the Biblical Canon that was set in 375 A.D by Athanasius.
Why they reject the Gospel of Mary Magdalene? The Gospel of Judas, the Gospel of Thomas, the Gospel of Joseph? Why Early Christian Church had women as priests?