'Certain Man' in the Bible

And there is a certain man of Zorah, of the family of the Danite, and his name is Manoah, his wife is barren, and hath not borne;

And there is a certain man of Ramathaim-Zophim, of the hill-country of Ephraim, and his name is Elkanah, son of Jeroham, son of Elihu, son of Tohu, son of Zuph, and Ephrathite,

And a certain man of the sons of the prophets said unto his neighbour by the word of Jehovah, 'Smite me, I pray thee;' and the man refuseth to smite him,