Theosophy’s Worldview of Authority:

There are no sacred books in Theosophy.

Revelation comes from "adepts", people who are supposed to be "beings perfected spiritually, intellectually, and physically, the flower of human and all evolution!' The Theosophical Movement

Mrs. Blavatsky’s teaching.  She is considered to have been an “adept.”

"I confined myself to the Hindu Scriptures, and in all cases I stated that I regarded these scriptures and the Hindu religion as the origin of all scriptures and all religions" Annie Besant

Blavatsky viewed the Gnostics as preserving an inner teaching.