'Certain Man' in the Bible

"Go into the city," He replied, "to a certain man, and tell him, 'The Teacher says, My time is close at hand. It is at your house that I shall keep the Passover with my disciples.'"

Now a certain man, named Lazarus, of Bethany, was lying ill-- Bethany being the village of Mary and her sister Martha.

Here is scope for ingenuity. Let people of shrewd intelligence calculate the number of the Wild Beast; for it indicates a certain man, and his number is 666.