'Certain' in the Bible

And he arrived at a [certain] place and spent the night there, because the sun had set. And he took [one] of the stones of the place and put [it] under his head and slept at that place.

And it happened [that] at that time Judah went down from his brothers and pitched his tent near a certain Adullamite, whose name [was] Hirah.

And Judah saw the daughter of a certain Canaanite there whose name [was] Shua. And he took her and went in to her.