The Bible characters were real if Baha'u'llah or Abdu'l-Baha said they were real.
It really helps to have the latest Revelation from God. Otherwise we are lost.
Daniel Chapter 12: 4 But thou, O Daniel, shut up the words, and seal the book, even to the time of the end: many shall run to and fro, and knowledge shall be increased. 8 And I heard, but I understood not: then said I, O my Lord, what shall be the end of these things? 9 And he said, Go thy way, Daniel: for the words are closed up and sealed till the time of the end. 11 And from the time that the daily sacrifice shall be taken away, and the abomination that maketh desolate set up, there shall be a thousand two hundred and ninety days. 12 Blessed is he that waiteth, and cometh to the thousand three hundred and five and thirty days.