'Certain' in the Bible

Then a scribe came and said to Him, “Teacher, I will follow You wherever You go.”

“For this reason the kingdom of heaven may be compared to a king who wished to settle accounts with his slaves.

And He said, “Go into the city to a certain man, and say to him, ‘The Teacher says, “My time is near; I am to keep the Passover at your house with My disciples.”’”

Now Peter was sitting outside in the courtyard, and a servant-girl came to him and said, “You too were with Jesus the Galilean.”