Although Jesus and His disciples spoke a dialect of Aramaic known as Old Galilean, we do not have any surviving manuscripts of the New Testament in the Old Galilean. The closest we have are a few manuscripts of the New Testament in the Syriac, a dialect of the Old Galilean Aramaic.
The Syriac is the closest to the Old Galilean we have in the New Testament today, yet it is not entirely the same as the Old Galilean. It is sort of like the difference...