37:9.11
The Midway Creatures. In the early days of most inhabited worlds, certain superhuman but materialized beings are of assignment, but they usually retire upon the arrival of the Planetary Adams. The transactions of such beings and the efforts of the Material Sons to improve the evolutionary races often result in the appearance of a limited number of creatures who are difficult to classify. These unique beings are often midway between the Material Sons and the evolutionary creatures; hence their designation, midway creatures. In a comparative sense these midwayers are the permanent citizens of the evolutionary worlds. From the early days of the arrival of a Planetary Prince to the far-distant time of the settling of the planet in light and life, they are the only group of intelligent beings to remain continuously on the sphere. On Urantia the midway ministers are in reality the actual custodians of the planet; they are, practically speaking, the citizens of Urantia. Mortals are indeed the physical and material inhabitants of an evolutionary world, but you are all so short-lived; you tarry on your nativity planet such a short time. You are born, live, die, and pass on to other worlds of evolutionary progression. Even the superhuman beings who serve on the planets as celestial ministers are of transient assignment; few of them are long attached to a given sphere. The midway creatures, however, provide continuity of planetary administration in the face of ever-changing celestial ministries and constantly shifting mortal inhabitants. Throughout all of this never-ceasing changing and shifting, the midway creatures remain on the planet uninterruptedly carrying on their work.