Jiva has its own identity, separate from Bhagavan. If Bhagavan and Jiva are absolutely one, then there can’t be a relationship between worshipper and the worshipped, or master and servant, or lover and the beloved. For a relationship there must be two distinct individuals with their separate identities.  Advaitavada says that in the ultimate stage there is no distinction between Jiva and Brahman.  We don’t agree.