'Three' in the Bible

with three layers of huge stones and one layer of timbers. And let the cost be paid from the royal treasury.

Now I assembled them at the river that runs to Ahava, where we camped for three days; and when I observed the people and the priests, I did not find any Levites there.

Thus we came to Jerusalem and remained there three days.

and that whoever would not come within three days, according to the counsel of the leaders and the elders, all his possessions should be forfeited and he himself excluded from the assembly of the exiles.

So all the men of Judah and Benjamin assembled at Jerusalem within the three days. It was the ninth month on the twentieth of the month, and all the people sat in the open square before the house of God, trembling because of this matter and the heavy rain.