'Certain Man' in the Bible

when a certain man who was lame from his mother's womb was carried, whom they laid daily at the gate of the temple called Beautiful, to ask alms of those who were entering into the temple;

NOW a certain man named Ananias, with Sapphira his wife, had sold an estate,

But a certain man, named Simon, lived previously in that city, who practised magic, and astonished the nation of Samaria, giving out himself as an extraordinary great personage:

And found there a certain man named AEneas, during six years stretched on a bed, who was paralytic.

And there was a certain man at Lystra, who having lost the use of his feet was sitting, being lame from his mother's womb, and who had never been able to walk:

And a vision by night appeared to Paul; a certain man, a Macedonian, stood by him, entreating him, and saying, Pass over into Macedonia, and help us.

And as their stay there was extended to a considerable time, Festus communicated to the king Paul's affairs, saying, There is a certain man left by Felix, a prisoner: