The first contact was peaceful, almost uneventful: sudden landings near government buildings all over the world, brief discussions in the native languages, followed by treaties allowing the aliens to build certain buildings in certain places in exchange for certain favors-- nothing spectacular. The technological improvements that the aliens brought helped make life better for everyone, but they were improvements that were already well within the reach of human engineers within the next decade or two. And the greatest gift of all was found to be a disappointment-- space travel. The aliens did not have faster-than-light travel. Instead, they had conclusive proof that faster-than-light travel was utterly impossible. They had infinite patience and incredibly long lives to sustain them in their snail's-pace crawl among the stars, but humans would be dead before even the shortest space flight was fairly begun.

And after only a little while, the presence of aliens was regarded as quite the normal thing. They insisted that they had no further gifts to bring, and simply exercised their treaty rights to build and visit the buildings they had made.

The buildings were all different from each other, but had one thing in common: by the standards of the local populace, the new alien buildings were all clearly recognizable as churches.

Mosques. Cathedrals. Shrines. Synagogues. Temples. All unmistakably churches.

But no congregation was invited, though any person who came to such a place was welcomed by whatever aliens happened to be there at the time, who engaged in charming discussion totally related to the person's own interests. Farmers conversed about farming, engineers about engineering, housewives about motherhood, dreamers about dreams, travelers about travels, astronomers about the stars. Those who came and talked went away feeling good. Feeling that someone did, indeed, attach importance to their lives-- had come trillions of kilometers through incredible boredom (five hundred years in space, they said!) just to see them.