This book was written at the dawn of the author's claims, and thus claims are presented in ambiguous and often contradictory language.
Portions of the book may have been written before 1891, and the author specifically denies being 'Jesus' in this book. If that part is before 1891, then it would be the direct succession to his thoughts in 1884, when he wrote in BA vol. 4 that Jesus was still alive - while he was removing allegations that he considered himself 'Jesus'.
"We admit this that several Mahdis may have come before and possibly will come in future as well and probably someone by the name of Imam Muhammad may also appear." (Roohani Khazain vol.3 p.379)
"There was no discussion in Braheen about me being Messiah and only now God has told me . . . I am only similar to the Messiah . . . It is possible and quite possible that at some time in future such Messiah-likes such as me may appear upon whom the literal words of Hadith(of Holy Prophet) fit, because this humble self has not come with the Reign and Command of this world, but with poverty and humility." (Izala-e-Auham, Roohani Khazain vol 3 p.197-198)
"It is possible that in future no Messiah may come. It is possible 10,000 or more Messiahs may come and it is possible that he come with pomp and dignity and one of them may descend in Damascus." (Izala-e-Auham, Roohani Khazain vol 3 p.250-251)
"First, it should be known that belief in the descent of the Messiah is not a belief which is one of our fundamentals of faith or one of the pillars of the religion. In fact, it is a prophecy among hundreds of prophecies, which has nothing to do with the basis of Islam. Islam was not an incomplete religion till the time this prophecy was explained, nor did it become more complete when this prophecy was explained. It is not necessary that prophecies should be fulfilled in the literal sense.'' (p. 140)