A: I want to thank you for writing to us here at Truthbook with this very good question. We always love to hear from our visitors, and from students of The Urantia Book.
You are correct about the guardian angels. In The Urantia Book, we learn that:
(113:1.1) The teaching about guardian angels is not a myth; certain groups of human beings do actually have personal angels.
And then you wonder why, if God is no respecter of persons, all people are not gifted with personal angels. This is a good question, and we can find the answers in this same section I quoted above, called The Guardian Angels
First and foremost, we learn that:
(113:1.2) Originally, the seraphim were definitely assigned to the separate Urantia races. But since the bestowal of Michael, they are assigned in accordance with human intelligence, spirituality, and destiny.
I would suggest that you click on the link and read about the kinds of intellectual categories of human beings. You'll see that, even those people of subnormal mind are fellowshipped by angelic ministry.
The assignment of personal guardians is given according to attainment by an individual—attainment of spiritual benchmarks. These benchmarks are indicated by the "circles of human progress and spiritual development."
You can read more about these circles of human progress HERE
In this section we learn that circle attainment is a result of "successive conquest of the seven psychic circles of mortal potentiality." This indicates that such attainment is through personal initiative towards spiritual growth. Not all persons are inclined to pursue such spiritual growth, and this quote seems to indicate that those that are, and who make progress in this area, are given personal angels because they have been earned, in a sense.
From this section:
(110:6.13) "The seventh circle. This level is entered when human beings develop the powers of personal choice, individual decision, moral responsibility, and the capacity for the attainment of spiritual individuality. This signifies the united function of the seven adjutant mind-spirits under the direction of the spirit of wisdom, the encircuitment of the mortal creature in the influence of the Holy Spirit, and, on Urantia, the first functioning of the Spirit of Truth, together with the reception of a Thought Adjuster in the mortal mind. Entrance upon the seventh circle constitutes a mortal creature a truly potential citizen of the local universe.
"The third circle. The Adjuster's work is much more effective after the human ascender attains the third circle and receives a personal seraphic guardian of destiny. While there is no apparent concert of effort between the Adjuster and the seraphic guardian, nonetheless there is to be observed an unmistakable improvement in all phases of cosmic achievement and spiritual development subsequent to the assignment of the personal seraphic attendant. When the third circle is attained, the Adjuster endeavors to morontiaize the mind of man during the remainder of the mortal life span, to make the remaining circles, and achieve the final stage of the divine-human association before natural death dissolves the unique partnership."
(110:6.17) "The motivation of faith makes experiential the full realization of man's sonship with God, but action, completion of decisions, is essential to the evolutionary attainment of consciousness of progressive kinship with the cosmic actuality of the Supreme Being. Faith transmutes potentials to actuals in the spiritual world, but potentials become actuals in the finite realms of the Supreme only by and through the realization of choice-experience. But choosing to do the will of God joins spiritual faith to material decisions in personality action and thus supplies a divine and spiritual fulcrum for the more effective functioning of the human and material leverage of God-hunger.
It is true that "God is no respecter of persons," and this is shown by the fact that all of his children are given the same chances for spiritual advancement—all have available to them the same spiritual agencies—just as the sun and the rain fall on both the just and the unjust. But not all of God's children have the same spiritual longings or have accomplished the same spiritual achievements—action, and choice-experience. And so, this appears to be the reason for the fact that only certain individuals are given personal angels.
It would be very difficult to discern who has a personal angel and who does not, but it would seem that if we carefully read these sections which are linked above, we can help ourselves to understand what is needed to reach that point where we may at least imagine that we have such heavenly help...of course, staying close to God, dedicating our wills to do his will, and a thorough study of The Urantia Book can only help us as we pursue our spiritual quest...
I hope that this answer has been helpful to you today. Thanks again for writing. Please feel free to write back any time. And, you might enjoy taking a look at our study on Angels HERE—also, we have a lovely short video called "You'll Never Walk Alone" HERE"