Right after the part you quoted, Jesus exhorted people to "Be on guard! Be alert!" He goes on to repeat that people should watch vigilantly for the apocalypse, so they wouldn't be caught off guard. Isn't that exactly what you're scolding people for?

(I mean, sure, obviously they continue to be wrong, and it's silly. But the Bible verse you quote is a perfect example of a quote's meaning changing when you take it out of context.)

Hacker News is not the place to discuss theology, which is why I did not quote a lot.

Personally, to me, it does not change the meaning. Telling someone to make sure that their fire extinguisher is always in working condition does not imply that their house will burn down shortly.