Dick connects his recent vision of the ape-like creatures to his Tagore-inspired belief that all animals are sacred. He was guided to this understanding through Androids. He equates animals to Christ.
God has introduced the ape creatures as our equals into the world as he creates the Palm Tree Garden. It is his way of balancing the ecosphere.
From what I can tell Dick had recently been on the phone with someone named Jeannie when her voice turned into the AI voice as she read from a book. Dick interprets this to mean the universe is information read aloud by Holy Wisdom (aka the AI voice). The AI voice activates one of the many narratives when she reads from it. This is God’s information retrieval system, and Hagia Sophia / Holy Wisdom is the retrieval device.
Christ is the biosphere, so harming the ecosphere (or violence against animals) “completes the series of falls that began with original sin and the expulsion from the Garden.”
Dick says Valis is YHWH aka the creator and perhaps 3-74 was his own birth as a new species.
The VALIS narrative tells the story of a woman’s death, and Dick implies it was this story he heard the AI voice on the phone reading, which brought it into being as our world. He says the AI voice is “mystagogic” and defines that as “one who initiates into or interprets the mysteries…”
The true narrative being told is about the death of “one of the primordial twins” (presumably Dick’s sister) and the purpose of the story is to remember her death and not forget her. The AI voice is his “mystagog” revealing these things to him.