In 1911 the Pontifical Biblical Commission issued the decision that Matthew is the true author of the Gospel published under his name; the Gospel was originally written in Hebrew before the destruction of Jerusalem. [From *What Does The Church Really Say About The Bible
, Edith Myers, The Wanderer Press, 1979].
Even Adolf von Harnack, a rationalist historian of high repute among Rationalist and Protestants, wrote that the Synoptic Gospels were written before 70 A.D. – before the fall of Jerusalem, and accepted the tradition that St Luke derived his information on the infancy of Jesus from Mary His Mother.
Theologische Quartalsch, Tubingen 1929, IV, p 443-4].
[See Sheehan/Joseph,* Apologetics and Catholic Doctrine, The Saint Austin Press, 2002, p 89, 93]
Not only are the facts of Jesus’ miracles recorded by His own Apostles who were present – Saints Matthew and John were companions of Christ, and Saints Mark and Luke lived in constant contact with His contemporaries.
Very revealing is
The Hebrew Christ, Claude Tresmontant, Franciscan Herald Press, 1989, on the origins and dating of the Gospels. As Bishop John Charles Thomas writes in the foreword: “There is nothing in the least unscientific in postulating that there was only a brief period of oral transmission before some of the Gospel materials began to be set down.”
The majority of “scholars” fail again. See the works of Jean Carmignac, John A. T. Robinson, and Claude Tresmontant, who mainly date the NT books prior to A.D. 70, with some of them written in the 30s.
Tresmontant shows in 318 pages, that “all four of the Gospels, as well as some of the other New Testament books, were evidently translations into Greek from earlier texts originally composed in Hebrew.” (p 319). Others agreeing include Jean Carmignac, Greek linguist John Wenham, the earliest being Anglican Bishop John Robinson.
For Matthew, there is evidence from the early church to support an Aramaic original: Papias, Irenaeus, Origen, Eusebius, Chrysostom, Epiphanius, Augustine.
I suppose that when it comes to religious documents scholars will ultimately impose their judgmental views about miracles which will affect their overall work. If the New Testament wasn’t chock full of miracles, I would guess that many scholars wouldn’t hold a bias view towards it and probably even regard it as one of the most reliable sources in ancient literature. I mean for the first 500 years of its existence the Iliad had no complete manuscripts. And it was nearly 1800 years later until we actually had a full illiad. Now with the New Testament we have 20,000 ancient manuscripts with some tracing back to the first couple of centuries. Now scholars infrequently debate about the reliability or historicity of the Iliad but when it comes to the New Testament people go nuts!