Dick tries to understand the connection between the book of Acts in the Bible and his novel Flow My Tears, the Policeman Said. He sees Flow My Tears as something like an information-based eucharist which can replicate in people. This living information reprograms us and allows us to receive subliminal messages.
Dick affirms Zebra is the Paraclete and thinks it should be studied scientifically, although he admits that would be futile since it is so advanced and nearly impossible to discern. It communicates through the “brain” network using pop culture artifacts like books and song lyrics. Once someone has Zebra in them they are part of the brain for good, but it can replicate itself in many different ways through “information plasma.”
One bit equals the entire information so once inside someone it will grow to the whole thing. He compares this to Jesus’s parable of the mustard seed. What Dick experienced in 3-74 was the entirety of the information expanding in his mind. Apparently (according to Dick) the authorities tried hard to prevent him from publishing Flow My Tears which proves how powerful it is.
We are part of this living brain. He realizes the author of Ubik was Ubik itself and that Flow My Tears was the doorway that led to Rome 45 A.D.
The BIP represents entropy. Dick imagines a new big bang which will reset the cycle of the universe and it is all tied together with the Acts information encoded into Flow My Tears.