The Bible may say that, but there is no independent confirmation. The only thing that historical records other than the Bible can suggest is that he lived, spoke, had followers, and died.
'Bible' is merely a Greek word meaning book.
It is made up of all kinds of writings from various sources.
Your concerns were noted early on, by a fella named Luke; whose occupation was doctor.
Luke 1:1-4 (NKJV)
1 Inasmuch as many have taken in hand to set in order a narrative of those things which have been fulfilled among us, 2 just as those who from the beginning were eyewitnesses and ministers of the word delivered them to us, 3 it seemed good to me also, having had perfect understanding of all things from the very first, to write to you an orderly account, most excellent Theophilus, 4 that you may know the certainty of those things in which you were instructed.