Further : "A treatise about cosmic fire" - Chapter 2,d - Elementals or Online : The future arrival of the Avatar

Divine avatars are personalized forces of the Sabda oder Logos. In the highest aspects they are the cosmic avatars of a divine ray, who evtl. overshadow individual masters, who then play a role as small avatars . Well known are in this context the 10(24) hinduistic avatars like Krishna, Buddha and the awaited Kalki-Avatar, who represent steps of human development but not of common development.

...Now, we could perhaps elaborate a little on the methods used by some cosmic existences and sophisticated entities, if they appear to some services among people. These methods could be very superficial and inadequate way, for example as follows:
1.The method of overshadowing.
2. The method of inkarnation of any principle.
3. The method, which [749] can be watched in the secret of the Bodhisattva or of Christ.
4. The method of direct inkarnation

On the path of descending rapprochement (Esoteric Psychology 2, II, 272) incorporated Buddha, from and on the mental plane, in himself the radiating Erleuchtung, which is the result of a seldom incident - a cosmic contact. He prompted his contemporaries, to turn to the path of enlightenment, to whose aspects knowledge and wisdom are counted.
Then came the next big Avatar, Christ, who is full enlightened in an occult and spiritual sense and on the path of descending rapprochement brought in himself all that to unfolding , what Buddha incorporated of light and wisdom in himself.

The coming Avatar(A Treatise on Cosmic Fire, page 746)

"From the zenith to the nadir, from dawn to fall of night, from the emergence into being of all that is or may be to the passing into peace of all that hath achieved, gleameth the orb of blue and the inner radiant fire. From the gates of gold down to the pit of earth, out from the flaming fire down to the circle of gloom, rideth the secret Avatar, bearing the sword that pierceth. Naught can arrest His approach, and none may say Him nay.
To the darkness of our sphere He rideth alone, and on His approach is seen the uttermost disaster, and the chaos of that which seeketh to withstand.

The Asuras veil their faces, and the pit of maya reeleth to the foundation. The stars of the eternal Lhas vibrate to that sound,–the WORD uttered with sevenfold intensity. Greater the chaos becometh; the major centre with all the seven circulating spheres rock with the echoes of disintegration. The fumes of utter blackness mount upwards in dissipation.
The noise discordant of the warring elements greets the oncoming One, and deters Him not. The strife and cries of the fourth great Hierarchy, blending with the softer note of the Builders of the fifth and sixth, meet His approach. Yet He passeth on His way, sweeping the circle of the spheres, and sounding forth the WORD.
From the nadir to the zenith, from eve unto the Day be with us, from the circle of manifestation to the centre of pralayic peace, is seen the enveloping blue, lost in the flame of achievement.
Up from the pit of maya back to the portals of gold, forth from the gloom and darkness back to the splendour of day, rideth the Manifested One, the Avatar, bearing the shattered Cross. Naught can arrest His return, none can impede His Path, for He passeth along the upper way, bearing His people with Him.
Cometh the dissolution of pain, cometh the end of strife, cometh the merging of the spheres and the blending of the hierarchies. All then is re-absorbed within the orb, the circle of manifestation. The forms that exist in maya, and the flame that devoureth all, are garnered by the One Who rideth the Heavens and entereth into the timeless AEon." (From the Archives of the Lodge.)

We have touched upon the subject of Avatars and the various classes into which they might be divided. We might now enlarge somewhat more upon the methods. The methods whereby certain cosmic Existences and certain highly evolved Entities appear among men to do a specific work might be very inadequately, and cursorily summarised, as follows: The method of overshadowing. The method of embodying some principle.

(About the coming avatar states D.K. that he had been incarnated involuntarily into the astral world of the moon. From there the planetary logos incarnated him involuntarily. He is different because his monad is from three rays, but D.K. states that it is not important who he once was. This makes the notice understandable, that he is not an intrinsic avatar of white brothership. It is not quite sure that he comes. In this case will the brotherhood establish an auxiliary order.)

From : "A treatise on the 7 rays", Bk. 2, pg. 311 :
Later , the avatar will emerge, who will embody in himself all that is what Buddha posessses of enlightenment, and what Christ possesses of devoted love.
He is still to embody that energy, which has created a convergence of appropriation. When he arises, mankind will undergo a major event of appropriation : they will recognize their divinity and establish on earth a light station and a power station, which will allow for the initiation mysteries take place on this planet in the outer world. This event is coming closer to it that brings so much unrest in our days, because the avatar is already on the road.

Later, an avatar will appear who has neither the full enlightenment of the Buddha nor the full essence of expression of the God-love of Christ, but whowill have a great deal of wisdom and love, not to mention "that" materializing power which it will enable him to establish a power plant of divine energies on the physical level.
His job as an avatar is in many ways more difficult than its two predecessors, since he carries not only the energies of the two divine principles which have been duly anchored by its two big brothers on the planet, but also a good part of that third divine principle, which has not been taken yet on our planet. His job as an avatar is in many ways more difficult than its two predecessors, since he is not only the energies of the two divine principles which have been duly anchored by its two big brothers on the planet
He brings the will of God into the visible creation. From this will we know until today really nothing. His task is so difficult that the New Group of World Servers is trained to go for the hand and to offer assistance. Thus, through him, one aspect of the principle of the first ray can to take root on earth.

A.A. Bailey speaks about a certain disaccord of the three big cosmic avatars of the central spiritual sun of the highest ONE in the center of the universe.
The historical Christ is overshadowed by the cosmic avatar of the second ray.

The coming avatar will eventually be overshadowed by the cosmic avatar of the first ray , the cosmic divine "Antichrist".
D.K. says that the position of this cosmic avatar of the first ray, the monadic will of the supreme ONE, the divine flash, is, that such a creation should not be created at all (Ann.: He is so right, but he does not take it to heart as the deliverer of the force and the plan. That is so because he is the cosmic will of the central One...)
However, the avatar is from the second ray is of opposite opinion, while the formcreating cosmic Avatar of the third ray is striving relentlessly to create perfect shapes.
(More in the [Online-]-Books).

What for unworldly events of this earth has to expect from this center, was already evident from the historical avatar of the second cosmic ray who overshadows Christ, who had only a small community and after the Plan had to end on the cross.

Die "central spiritual sun" is neither benevolent nor graceful or mercyful(such qualities are properties of the lower monadic plane and of the atmic plane) It is the synthesis of the very highest forces, an eternal cosmic imperturbable tyrant and pascha.