Trinity-Embraced Sons are forever devoted to Trinity service and assignment. One order of Trinity-Embraced Sons is the Trinitized Sons of Attainment.

The following excerpts are from The Urantia Book, Paper 22, "The Trinitized Sons of God."

22:1.3 The Trinitized Sons of Attainment—the Mighty Messengers, Those High in Authority, and Those without Name and Number—are all Adjuster-fused ascendant mortals who have attained Paradise and the Corps of the Finality. But they are not finaliters; when they have been Trinity embraced, their names are removed from the finaliter roll call. The new sons of this order pass through specific courses of training, for comparatively short periods, on the circuit headquarters planets of the Havona circuits under the direction of the Eternals of Days. Thereafter they are assigned to the services of the Ancients of Days in the seven superuniverses.
Comment: Each superuniverse is ruled by three Ancients of Days. When fully developed, our superuniverse will contain about one trillion inhabited planets.

22:2.1 Mighty Messengers belong to the ascendant group of the Trinitized Sons. They are a class of perfected mortals who have been rebellion tested or otherwise equally proved as to their personal loyalty; all have passed through some definite test of universe allegiance. At some time in their Paradise ascent they stood firm and loyal in the face of the disloyalty of their superiors, and some did actively and loyally function in the places of such unfaithful leaders.

22:2.2 With such personal records of fidelity and devotion, these ascending mortals pass on through Havona with the stream of the pilgrims of time, attain Paradise, graduate therefrom, and are mustered into the Corps of the Finality. Thereupon they are trinitized in the secret embrace of the Paradise Trinity and subsequently are commissioned to become associated with the Ancients of Days in the administration of the governments of the seven superuniverses.

22:2.3 Every ascendant mortal of insurrectionary experience who functions loyally in the face of rebellion is eventually destined to become a Mighty Messenger of the superuniverse service. Likewise is any ascendant creature who effectively prevents such upheavals of error, evil, or sin; for action designed to prevent rebellion or to effect higher types of loyalty in a universe crisis is regarded as of even greater value than loyalty in the face of actual rebellion.

22:2.4 The senior Mighty Messengers were chosen from those ascendant mortals of time and space who were among the earlier Paradise arrivals, many having traversed Havona in the times of Grandfanda. But the first trinitizing of Mighty Messengers was not effected until the candidate corps contained representatives from each of the seven superuniverses. And the last group of this order to qualify on Paradise embraced ascendant pilgrims from the local universe of Nebadon.
Comment. Nebadon is the name of the local universe in which we mortals reside. Jesus is the Sole Sovereign of our local universe.

22:2.5 Mighty Messengers are embraced by the Paradise Trinity in classes of seven hundred thousand, one hundred thousand for assignment to each superuniverse. Almost one trillion Mighty Messengers are commissioned on Uversa, and there is every reason to believe that the number serving in each of the seven superuniverses is exactly the same.

22:2.6 I [the author of Paper 22] am a Mighty Messenger, and it may interest Urantians to know that the companion and associate of my mortal experience was also triumphant in the great test, and that, though we were many times and for long periods separated in the agelong inward ascent to Havona, we were embraced in the same seven-hundred-thousand group, and that we spent our time passing through Vicegerington in close and loving association. We were finally commissioned and together assigned to Uversa of Orvonton, and we are often dispatched in company for the execution of assignments requiring the services of two Messengers.
Comment. Havona contains one billion worlds. These worlds, circulating around Paradise, are part of the central universe. Vicegerington is one of the seven sacred worlds of God the Father. These worlds circulate about Paradise in close proximity to the eternal Isle. [UB 13:0:1,3] Orvonton is the name of the superuniverse in which we mortals reside. Uversa is the capital of Orvonton.

22:2.7 Mighty Messengers, in common with all Trinity-embraced sons, are assigned to all phases of superuniverse activities. They maintain constant connection with their headquarters through the superuniverse reflectivity service. Mighty Messengers serve in all sectors of a superuniverse and frequently execute missions to the local universes and even to the individual worlds, as I do on this occasion.

22:2.8 In the superuniverse courts, Mighty Messengers act as defenders of both individuals and planets when they come up for adjudication; they also assist the Perfections of Days in the direction of the affairs of the major sectors. As a group, their chief assignment is that of superuniverse observers. They are stationed on the various headquarters worlds and on individual planets of importance as the official observers of the Ancients of Days. When so assigned, they also serve as advisers to the authorities directing the affairs of the spheres of their sojourn. The Messengers take active part in all phases of the ascendant scheme of mortal progression. With their associates of mortal origin they keep the supergovernments in close and personal touch with the status and progression of the plans of the descending Sons of God.

22:2.9 Mighty Messengers are fully conscious of their entire ascendant careers, and that is why they are such useful and sympathetic ministers, understanding messengers, for service on any world of space and to any creature of time. As soon as you are delivered from the flesh, you will communicate freely and understandingly with us since we spring from all the races on all the evolutionary worlds of space, that is, from those mortal races that are indwelt by, and subsequently fused with, Thought Adjusters.

22:3.1 Those High in Authority, the second group of the Trinitized Sons of Attainment, are all Adjuster-fused beings of mortal origin. These are the perfected mortals who have exhibited superior administrative ability and have shown extraordinary executive genius throughout their long ascending careers. They are the cream of governing ability derived from the surviving mortals of space.

22:3.2 Seventy thousand of Those High in Authority are trinitized at each Trinity liaison. Though the local universe of Nebadon is a comparatively young creation, it has representatives among a recently trinitized class of this order. There are now commissioned in Orvonton more than ten billion of these skillful administrators. Like all separate orders of celestial beings, they maintain their own headquarters on Uversa, and like the other Trinity-embraced sons, their reserves on Uversa act as the central directing body of their order in Orvonton.

22:3.3 Those High in Authority are administrators without limitation. They are the everywhere-present and always-efficient executives of the Ancients of Days. They serve on any sphere, on any inhabited world, and in any phase of activity in any of the seven superuniverses.

22:3.4 Having superb administrative wisdom and unusual executive skill, these brilliant beings assume to present the cause of justice in behalf of the superuniverse tribunals; they foster the execution of justice and the rectification of misadaptations in the evolutionary universes. Therefore, if you should ever be cited for errors of judgment while you are ascending the worlds and spheres of your ordained cosmic progression, it is hardly likely that you would suffer injustice since your prosecutors would be onetime ascendant creatures who are personally familiar with every step of the career you have traversed and are traversing.

22:4.1 Those without Name and Number constitute the third and last group of the Trinitized Sons of Attainment; they are the ascendant souls who have developed the ability to worship beyond the skill of all the sons and daughters of the evolutionary races from the worlds of time and space. They have acquired a spiritual concept of the eternal purpose of the Universal Father which comparatively transcends the comprehension of the evolutionary creatures of name or number; therefore are they denominated Those without Name and Number. More strictly translated, their name would be “Those above Name and Number.”

22:4.2 This order of sons is embraced by the Paradise Trinity in groups of seven thousand. There are of record on Uversa over one hundred million of these sons commissioned in Orvonton.

22:4.3 Since Those without Name and Number are the superior spiritual minds of the survival races, they are especially qualified to sit in judgment and to render opinions when a spiritual viewpoint is desirable, and when experience in the ascendant career is essential to an adequate comprehension of the questions involved in the problem to be adjudicated. They are the supreme jurors of Orvonton. A maladministered jury system may be more or less of a travesty of justice on some worlds, but on Uversa and its extension tribunals we employ the highest type of evolved spiritual mentality as juror-judges. Adjudication is the highest function of any government, and those who are intrusted with verdict rendering should be chosen from the highest and most noble types of the most experienced and understanding individuals.

22:4.4 The selection of candidates for the trinitization classes of Mighty Messengers, Those High in Authority, and Those without Name and Number is inherent and automatic. The selective techniques of Paradise are not in any sense arbitrary. Personal experience and spiritual values determine the personnel of the Trinitized Sons of Attainment. Such beings are equal in authority and uniform in administrative status, but they all possess individuality and diverse characters; they are not standardized beings. All are characteristically different, depending on the differentials of their ascendant careers.

22:4.5 In addition to these experiential qualifications, the Trinitized Sons of Attainment have been trinitized in the divine embrace of the Paradise Deities. Consequently they function as the co-ordinate associates of the Stationary Sons of the Trinity, for the Trinity embrace does seem to precipitate out of the stream of future time many of the unrealized potentials of creature beings. But this is true concerning only that which pertains to the present universe age.

22:4.6 This group of sons is chiefly, but not wholly, concerned with the services of the ascendant career of the time-space mortals. If the viewpoint of a mortal creature is ever in doubt, the question is settled by appeal to an ascendant commission consisting of a Mighty Messenger, One High in Authority, and One without Name and Number.

22:4.7 You mortals who read this message may yourselves ascend to Paradise, attain the Trinity embrace, and in remote future ages be attached to the service of the Ancients of Days in one of the seven superuniverses, and sometime be assigned to enlarge the revelation of truth to some evolving inhabited planet, even as I am now functioning on Urantia.