'Certain Man' in the Bible

And as he went out on the land, there met him a certain man from the city who had had demons for a long time; and he wore no clothes, and remained not in a house, but in the tombs.

And Jesus replied and said, A certain man went down from Jerusalem to Jericho, and fell among robbers, who both stripped him and inflicted blows upon him, and went away leaving him half dead.

And he spoke this parable; A certain man had a fig tree planted in his vineyard, and he came seeking fruit on it and found none.

And he said to him, A certain man made a great supper, and invited many.

And he said, A certain man had two sons.