The Elders poured knowledge into their heads. All sciences from Political Science and Philosophy to Math and Physics. They were given the equivalent of 5,000 years of investigation and research in a matter of hours. The vast amounts of data that had been force fed to them killed some and drove others insane. Those who lived had strong, flexible minds. A few generations passed and each generation received the same glut of knowledge on being declared adults. They were taught how to how to store and instantly retrieve any of that mass of data and anything they had learned instantly.
The Elders led their meditations and rewarded the best. Punishments were limited to gentle chastisement and some of the very best experienced the physical love of their gods. It was considered an ultimate reward. In this way the Elders managed to introduce inheritable changes in brain wiring. In learning to cope with, actively use, and manipulate the vast amounts of data the Elders gave them they strengthened their minds immensely. The small physical changes and the added strength and flexibility of their minds would make it ultimately possible for them to develop the ability and concentration to use what other races of man would call sorcery. It wasn't really. It took an extremely flexible yet immensely strong mind to fully comprehend what they were really doing and even then it was only those who had the wiring changes and could see the extra-dimensional energies used and make full use of them. This meant that only they and their descendants could use the so-called magic. Even if some other race of mankind should learn use it the "magic" would be virtually impossible for them to use.
One young man wanted to share some of this great knowledge with other humans on earth. His name was Ra. He hid this desire. He learned how to not even think it unless he knew the Elders occupied with instruction or other things. He bided his time. Then when it was announced that in 10 more years the third group was finally close to solving their last puzzle and so passing their entrance test he volunteered to learn their language and be among those to meet them. He made his mind blank as they Elders gave him the new language, Egyptian they called it. For his own safety he tried to be a perfect sponge, thinking none of his own thoughts merely receiving. This lead to a pleasant surprise for him. He was one of the best speakers of the new language and so he and a woman Heidi were selected to meet the egyptians as they landed. The tribal leaders had made clothes for them imitating then current Egyptian dress for them to wear. Although they knew that the Scandinavians had landed naked they were told that the newcomers would arrive like the first Pearls did, with whatever they had been wearing and carrying.
They were waiting by the pyramid. He had shaved his head and applied makeup as male egyptians of any status did and was wearing a pectoral made of gold around his neck and hanging down his chest. He had on a short linen kilt and sandals. Heidi was wearing a linen skirt that reached ankles but was loose enough to walk in as well as open toed sandals of leather decorated in silver. She was wearing no makeup but had on a small tiara and other jewelry. The jewelry was loaned them but they had purchased the clothes using their own money. After some discussion the community had been put on the gold standard and used gold and silver coins.
As soon as the bright light started he left Heidi and running foward leaped towards the light. He hit it almost exactly right and vanished as the Egyptian harvestees landed near the pyramid. Heidi was shocked speechless. She didn't know what to say or do. An Elder appeared and took over.
The Elder mentally spoke to the new arrivals. She told them of the nature of the test that the godbox represented and of their mission to oppose the creations of the Galen and their works. Including Heidi in the mental broadcast she also said that Ra had managed to make it back to Egypt but that she and her fellow gods would watch him and prevent him from causing any harm there. She welcomed them to their new home and then disappeared. She went and thought and decided that it would be very educational to watch him and see how well he managed for himself. It would be a good baseline for seeing how well the pearls were developing and how easily they could manage the work which their "gods" had planned for them. If he did well well with no so-called sorcery and mental powers then when the pearls had them there would be NO society the Galen could create that the Elders could not influence through such useful followers. The Galen were concentrating on physical superiority, even naming their creations Supremis but even physically perfect specimens can be hamstrung by bad governance. Or a slow and unfeeling beauraucracy whose people, even if mostly good people, have to worry more about securing their positions against those who aren't good then performing their jobs. Or even strange and twisted cultural fads that seem to spring out of nowhere and grip the youth of a culture. Or mixes of any of these. She smiled and reported to the other Elders. They would have to find out where he came out and what he did. They would watch carefully but never reveal themselves unless and until they deemed that they had learned enough. She smiled as she envisioned what she would do to these Supremis the Galen were creating. Partisanship, Nihilism, Fanaticism, Despair, Apathy, they would visit all of these on the creations of her hated enemies.
Meanwhile unsuspecting of their fate, the new arrivals are meeting Heidi and being led to the town. They marvel at the construction of the road and the running water in the showers and the giant bath. The only real change since the Scandinavians came is the bioluminescent light. A bioluminescent algae found in some deep caves was discovered by a scientist who managed to find a nutrient bath that kept them alive and glowing for years if properly taken care of so there was light without need for fire where candles otherwise would be used. Once in the bath they had been given what had become known as The Knowledge and were started on the road to merging with the existing culture.
Ra meanwhile was realizing that navigating a spacetime fissure was no easy feat. He could see nothing but grey formlessness, neither hearing nor smell worked. and the only solid object was apparently himself. He deduced that navigation must primarily mental and so commenced to remember all he knew of Egypt and built a picture in his mnind that he clung to fiercely. His deduction was correct and his concentration sufficient. He came out of the grey limbo on earth and in Egypt. He was several feet in the air but managed to land on his feet. In front of Pharaoh Amenophis IV.
He managed to convince the pharaoh he was an emissary from the sun god and after demonstrating some of his wide ranging knowledge he became the Pharaoh's chief advisor. It was on his "advice" that Amenophis IV changed his name to Akhenaton and it was based on the words of his supposedly divine message that Akhenaton changed ther religion of egypt to monotheistic worship of Aten and built the city of Akhetaten and moved his capital there. Marrying Nefertiti was his own idea. Ra, although unknown to most people, wielded a great deal of power. He enjoyed it far more than he had thought he would and instead of using to be sure he was heard and his wealth of knowledge taken seriously he used it to cement his place and for his own enjoyment. any secretes he let slip were purely by accident and did not much alter Egyptian society. He made enemies and eventually one got to him despite his superior knowledge and he was killed a little more than 16 years after arriving. So much did Akhenaton miss him that he designated his brother Smenkhkare to be his co-ruler. Two years later they were both dead and the religion went back to its normal polytheism. The Elder watching nodded, satisfied at what he had discovered. He went back and told his fellows that these Atlanteans were precious indeed and should receive the most attention of any group.