Your world is too valuable to incite a military invasion. No one who is visiting your world wants to destroy its infrastructure or its natural resources. That is why the visitors do not seek to destroy humanity, but instead to engage humanity in service to their collectives.
It is not military invasion that threatens you. It is the power of inducement and persuasion. This will be built upon your own weakness, upon your own selfishness, upon your ignorance of life in the Greater Community and upon your blind optimism regarding your future and the meaning of life beyond your borders.
To counteract this, we provide education and we speak of the means of preparation that are being sent into the world at this time. If you did not already know human freedom, if you were not already aware of the problems endemic to your world, then we could not entrust such a preparation to you. And we would not have confidence that our words would resonate with the truth of what you know.
Passage from The Allies of Humanity, Book One.