'Three Days' in the Bible

I gathered them together to the river that runs to Ahava; and there we encamped three days: and I viewed the people, and the priests, and found there none of the sons of Levi.

We came to Jerusalem, and stayed there three days.

and that whoever did not come within three days, according to the counsel of the officials and the elders, all his substance should be forfeited, and himself separated from the assembly of the captivity.

Then all the men of Judah and Benjamin gathered themselves together to Jerusalem within the three days; it was the ninth month, on the twentieth day of the month: and all the people sat in the broad place before God's house, trembling because of this matter, and for the great rain.