'Four' in the Bible

For before these days, Theudas rose up saying he was somebody. A number of men, about four hundred, joined {him}. {He} was executed, and all who followed him were dispersed and came to nothing.

But God spoke like this: 'His descendants will be foreigners in a foreign land, and they will enslave them and mistreat [them] four hundred years,

And he saw heaven opened and an object something like a large sheet coming down, being let down to the earth by its four corners,

And Cornelius said, "{Four days ago at this hour}, [the] ninth, I was praying in my house. And behold, a man in shining clothing stood before me

"I was in the city of Joppa praying, and in a trance I saw a vision--an object something like a large sheet coming down, being let down from heaven by its four corners, and it came to me.

[After he] had arrested {him}, he also put [him] in prison, handing [him] over to four squads of soldiers to guard him, intending to bring him {out for public trial} after the Passover.

[This took] about four hundred and fifty years. And after these [things], he gave [them] judges until Samuel the prophet.

({Now this man had} four virgin daughters who prophesied.)

Therefore do this that we tell you: {we have} four men who have [taken] a vow upon themselves.

Then you are not the Egyptian who before these days raised a revolt and led out into the wilderness the four thousand men of the Assassins?"

And [because they] were afraid lest somewhere we run aground against rough places, they threw down four anchors from the stern [and] prayed for day to come.