There is no original of any book of the Bible.
There are many copies of the original gospel of Matthew, which was written in the Hebrew language, as obviously all of the NT writings had to have been.
Matthew is the only NT book that is available to us in the original form. All others are somewhat corrupted by translation into Greek, which is a language that does not perfectly interface with Yehova’s language.
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The oracles of Yehova were committed to Judah, as Paul stated in his letter to the Romans.
“here are many copies of the original gospel of Matthew, which was written in the Hebrew language...”
No, actually there are none. None has ever been found. There is not a single known ancient copy of Matthew in Hebrew. None.
Assuming again??