The existing Brahma MahaPurana consists of 245 chapters and 7000-8000 verses. Unlike Holy Vedas, Brahma MahaPurana is the personal experiences of Brahma Ji or some other saint which may or may not be correct. Vedas are the words of God. The text which matches with Holy Vedas shall be taken as correct and the text which has knowledge against Vedas is termed to be incorrect.