'Four' in the Bible

and he saw the sky opened up, and an object like a great sheet descending, lowered by its four corners to the earth,

“I was in the city of Joppa praying; and in a trance I saw a vision of an object coming down from heaven, like a huge sheet being lowered by the four corners; and [it descended until] it came right down to me,

When he had seized Peter, he put him in prison, turning him over to four squads of soldiers of four each to guard him [in rotation throughout the night], planning after the Passover to bring him out before the people [for execution].

He had four virgin daughters who had the gift of prophecy.

Therefore do just what we tell you. We have four men who have taken a vow;

Then Paul took the [four] men, and the next day he purified himself along with them [by submitting to the ritual]. He went into the temple to give notice of [the time] when the days of purification [ending each vow] would be fulfilled and the usual offering could be presented on behalf of each one.

Then fearing that we might run aground somewhere on the rocks, they dropped four anchors from the stern [to slow the ship] and kept wishing for daybreak to come.