Below are all the known references to the Law of Assembly 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. Bailey are to the online books at the Lucis Trust website.
The Law of Assembly appears in Discipleship in the New Age, Vol. II and nowhere else that I can find.
For a discussion of what AAB means by a “law” please see Alice A. Bailey – What is a Law?
The building here to be carried forward, I would remind you, is not the building which is distinctive of the second divine aspect—that of Love-Wisdom. It is strictly connected with that of the first aspect of Purpose, Power or Will; it deals with the processes which precede the actual creative building, the drawing up of the blueprints (if I may use such a term) “within the confines of Shamballa,” where high spiritual Beings must lay Their plans. This is a different process to the creative building process, and is related to a mysterious undertaking which is carried forward under the “Law of Assembly.”
That which is rejected and which is occultly thrown out as no longer serving the purpose of the planetary Logos is replaced by that which “will measure up to the purpose of the Father.” It is this concept which has been travestied and distorted by the Christian teaching anent the “vicarious atonement.” This grew out of a basic confusion between the Law of Sacrifice and the Law of Assembly, and took place when any understanding of the nature of the Father remained a supreme mystery; the whole process was then interpreted in terms of the first and highest Aspect of the essential Trinity, of which man knew nothing, instead of in terms of the second Aspect, the building, magnetic aspect of Love. We are—if it could be but realised—in process of re-interpreting and re-arranging what can be called “the doctrinal structure underlying the relation between knowledge and wisdom.”
The process in which the initiate is now permitted to share during and after the fourth Initiation of Renunciation (which is presented to him in a successive series of points of revelation) is made possible by his submission to the Law of Sacrifice. This, in its turn, brings his consciousness under the influence—in developing stages—of the Law of Assembly. This is a law to which I have not yet made reference in any of my previous instructions. The initiate can now—through appreciated and comprehended revelation—add to his work with the Plan and its building technique, a capacity to work with divine Purpose and with those substances (etheric in nature) and those energies which permeate the cosmic etheric body (the four higher planes of our cosmic physical plane) under a law which is set in motion by the Father, but which makes the building activity of the Son possible, so that it is utterly in line with divine Purpose.
There is, first of all, the recognition of a great procedure which must, under the Law of Assembly, be responsible for the bringing in of extra-planetary energies as the redemption of the worlds of being and of form is carried forward by the second divine aspect. Of this procedure I can tell you naught. The place or the location of the procedure of assembly is made clear. It is in the Council Chamber of Shamballa. I would, however, brother of mine, call your attention to the fact that Shamballa is simply a word conveying the idea of a vast focal point of energies which are assembled and brought together by the planetary Logos in order to create a manifestation adequate to His unfolding intention and planetary service. The objective is equally clear; it is the assembly of that which has in it energies of redemption. Just as the Science of Redemption, under the hierarchical Plan, is the technique employed to redeem the world of appearances, so—on a much higher level—the Law of Assembly produces the Science of Energy which is the redemptive process (in a sense which you cannot possibly understand) influencing the work of those who labour for redemption in the world of meaning.
You are welcome to post your comments and understanding of this law.