Complex sentence: According to Jerome's "Commentary on Matthew", the text also has the name Authentic Matthew, as Jerome asserted that a tradition held it to be the original Hebrew version of the Gospel of Matthew.
Split into simpler sentences: According to Jerome's "Commentary on Matthew", the text also has the name Authentic Matthew. It was called "Authentic Matthew" because a tradition, reported by Jerome, asserted that it was the original Hebrew version of the Gospel of Matthew.