'Someone' in the Bible

" 'If someone dies suddenly and makes the head of his separation unclean, he will shave off [the hair of] his head on the day of his cleansing; on the seventh day he will shave it off.

So Moses made a snake of bronze, and he placed it on the pole; whenever a snake bit someone, and that person looked at the snake of bronze, he lived.

Someone from Jacob will rule and will destroy a remnant from the city."

" 'If anyone kills a person, the killer will be put to death {according to the testimony} of witnesses, but someone cannot die on testimony of one person.