The themes of these passages are covered in greater depth in the following works:
Complete Works
Vol. 7 – The Mysteries of Yesod
Vol. 10 – The Splendours of Tiphareth
Vol. 16 – Hrani Yoga
Izvor Collection
No. 225 – Harmony and Health
No. 229 – The Path of Silence
No. 232 – The Mysteries of Fire and Water