Josephus' famous passage on Jesus is almost without a doubt a forgery. This isJosephus wrote around the time that the Jerusalem uprising was suppressed by the Romans & a faction of the Jews was besieged at Masada, ie. approx. 70-79 AD. Although he mentions Jesus, some scholars feel that his mention of Jesus is a later insertion that does not contain the same kind of phrasing as the rest of his text,.........
not just the opinion of some scholars. With the exception of a small handful
of evangelists of questionable integrity (Josh McDowell comes to my mind)
you won't likely find any serious scholars Christians or non-Christians who would
consider the Testimonium Flavianum to be authentic. It is not just the phrasing of
the text. Analysis of the writings of the early church fathers including Origen
shows that the passage didn't exist before it was quoted by Eusebius who was
likely responsible for the insertion of the passage.