system
Given the following post, respond as if you're commenting on Reddit:
human
[WH40K] So there's some 9 ft. tall Jehova's Witness at my door - how can I get him to go away?

Hi reddit,

I live on a small island by myself and try not to mingle with people much. Yesterday however, I looked out my cottage window and saw some kind of floating castle spaceship.

Some odd fellows popped down and told me if I've heard of the God Emperor. Well. I don't much pay attention to religion, so I asked which one. The Jewish God, Islamic God, or Christian God, or any number of gods that we on Earth worship. I was also mindful to remind them that some people here and on Earth don't even think there's a god at all!

They got awful stroppy and went back to their ship, telling me we'll be hearing from them soon. Did I say something to upset them? How will they act on this?

**TL;DR** What would the Imperium of Man do when confronting a pre-spaceflight, multi-cultural planet that has a wide array of religious beliefs?
gpt
First, they send the missionaries. If the missionaries fail, they send the Ecclesiarchy. If the Ecclesiarchy has deemed the task of converting you is wasted effort, they send the Guard. When you retaliate against the guard, one single drop pod with 5 Space Marines inside smashed into the surface of your world and they slaughter you.