Ussher’s chronology represents a considerable feat of scholarship. It required the Bible to be firmly anchored in history, which needed a huge depth of learning in ancient history, including the rise of the Persians, Greeks and Romans. Then constructing a biblical chronology required expertise in biblical languages, and in-depth knowledge of the Bible.
This preface of Josephus is excellent in its kind, and highly worthy the repeated perusal of the reader, before he set about the perusal of the work itself.
Written by John Foxe History of Christian Martyrs.