'Certain' in the Bible

But a certain woman threw an upper millstone [down] on Abimelech’s head and crushed his skull.

And there was a certain man of Zorah, of the family of the Danites, whose name was Manoah; and his wife was infertile and had no children.

Now it happened in those days, when there was no king in Israel, that a certain Levite living [as an alien] in the most remote part of the hill country of Ephraim, who took a concubine for himself from Bethlehem in Judah.

While they were celebrating, behold, men of the city, certain worthless and evil men, surrounded the house, pounding on the door; and they spoke to the master of the house, the old man, saying, “Bring out the man who came to your house so that we may have relations with him.”