Again, my main shock was the lowering of my position in the hierarchy and the need to change many of my views and values. Understand that for adult humans, it is very hard to change one's world view and values. It takes time and recalibration of values for many things. For example, for many people, many values are attached to the idea of God as a friend and as a judge. This idea might fall apart and be replaced with the idea of quite indifferent All That Is. The main question which religious people will ask is: "Is anyone reading our thoughts? Is anyone listening to our prayers? Who is responsible for luck and misfortune in our life?"
Understand also, that much of our daily life is dependent on the proper function of routines and habits. If some of the basic beliefs are failing, this may shake the whole mind of a human and may slow down the performance of many trivial tasks. Naturally, some people are much more flexible and wiser than others. For many, it would be easy at first just to replace their traditional god with the new gods (aliens) and to continue living with it, at least temporarily. At least, their mental integrity will be relatively intact. Another option for them will be to insert aliens somewhere near angels and demons, below god and above humans. This will also require very little modification of their beliefs. It might be more difficult to accept the aliens for scientists and atheists, but again, they could treat the aliens only as foreigners and this may settle the problem. My main point is that humans will need help and time to deal with the mental transformation issues and human teachers would be best for that because most humans will have trouble relating to the aliens directly.