Both Justin and the writer who passes under the name of Clement add the clause 'Whatsoever is more than these cometh of evil' (or 'of the Evil One').

But this, while it tallies perfectly with the canonical reading, evidently excludes any other.

It is consequent and good sense to say, 'Do not go beyond a plain yes or no, because whatever is in excess of this must have an evil motive,' but the connection is entirely lost when we substitute 'Keep your word, for whatever is more than this has an evil motive'-- more than what?
The most important points that can be taken to imply a use of St.Mark's Gospel have been already discussed as falling under the head of matter rather than of form.
The coincidences with Luke are striking but complicated.

In his earlier work, the 'Beitraege' [Endnote 123:1], Credner regarded as a decided reference to the Prologue of this Gospel the statement of Justin that his Memoirs were composed [Greek: hupo ton apostolon autou kai ton ekeinois parakolouthaesanton]: but, in the posthumous History of the Canon [Endnote 123:2], he retracts this view, having come to recognise a greater frequency in the use of the word [Greek: parakolouthein] in this sense.

It will also of course be noticed that Justin has [Greek: par.