Well of course we wouldn't leave them open here. It was a general description. Staying outside the gates would garner the same reaction, especially considering humans are regularly on the menu here.

[Jeez. He's not dumb, he is just trying to give you a good idea of what you should be imagining here okay.]

Truly, a demon descending upon them from above is far more terrifying here. It's a matter of life or death, rather than ascension or damnation.