All known references to the Law of Being by Alice A. Bailey (AAB) in her voluminous writings and those given to her by Djwhal Khul (DK). Links on these pages of The Laws of Alice A. Baileyare to the online books at the Lucis Trust website.
What is a law?
… a law is but the spiritual impulse, incentive and life manifestation of that Being in which he lives and moves. A Treatise on White Magic , INTRODUCTORY REMARKS
A law is an expression or manifestation of force applied, under the power of thought, by a thinker or group of thinkers. Discipleship in the New Age, Vol. I , SECTION ONE – DISCIPLESHIP IN THE NEW AGE – Part 2
… a law is in reality the effect of the life of a greater entity as it encloses a lesser within its living processes.
Esoteric Healing , Part Three – The Fundamental Laws of Healing
… a law is but the effect of the continued intelligent activity of the Life aspect as it works in conjunction with matter. Esoteric Psychology – Volume I , 5. The Rays in Cyclic Manifestation
A law is only an expression or manifestation of force, applied under the power of thought by a thinker or group of thinkers. Esoteric Psychology – Volume II , II. The Seven Laws of Soul or Group Life – Part 5
A law presupposes a superior being who, gifted with purpose, and aided by intelligence, is so coordinating his forces that a plan is being sequentially and steadily matured. A Treatise on White Magic
In all I could only find five references to the Law of Being, although the word “Being” (capitalized first letter) appears 365 times in the writings of AAB, for example as “Great Being,” “self-conscious Being,” “life expression of a Being,” “Soul or Lord of Being,” and many more similar expressions.
The following are short quotes. To get the full context you will need to follow the link to Lucis Trust below each quote.
This cosmic law, demonstrating thus in a threefold manner, might (for lack of a better term) be called the Law of Being, and is of a nature so incomprehensible to the finite mind of man that he can only sense it partially through the aforesaid three branches.
11. Alignment is produced, the work of discipleship and of initiation becomes possible and proceeds according to the Law of Being.