Complex sentence: Michael Barber says that the earliest and most explicit evidence of a Hebrew canonical list comes from Jewish historian Josephus (37CE--c.100CE) who wrote about a canon used by Jews in the first century AD.
Split into simpler sentences: Michael Barber says that the earliest and most explicit testimony of a Hebrew canonical list comes from Jewish historian Josephus (37CE--c.100CE). Josephus wrote about a canon used by Jews in the first century AD.