Almost everyone has sinned. So why are there some mitzvos that are impossible for us to do? Like if everyone in the whole world keeps just one Shabbos Moshiach will come the next day. This is so so good, it’s worth putting the effort in to make this happen. People are lazy without a good enough reason. I think the powerful people of the world should come together for a big meeting and find a way for everyone to keep at least one Shabbos (the same Shabbos) this is the quickest way of making Moshiach come!😀 And its SO EASY!😀
Non Jews are not allowed to keep Shabbos.
Moshiach coming depends on Klal Yisroel keeping one (or two) shabbos, not the kofrim and tinukei sh’nishba that are not part of klal yisroel. Of course, we hope they do tshiva, but our work as the Jewish nation is where we are obligated to focus and fix.