two
Luke 24:18
And the one of them, whose name was Cleopas, answering said unto him, Art thou only a stranger in Jerusalem, and hast not known the things which are come to pass there in these days?
Mark 16:12
After that he appeared in another form unto two of them, as they walked, and went into the country.
Mark 16:13
And they went and told it unto the residue: neither believed they them.