We now scrutinize the problem more closely; and discover that the very _locus_ of the phrase is a matter of uncertainty.
Cyril once makes it part of St.Matt.x.

38[372].

Chrysostom twice connects it with St.Matt.xvi.

24[373].

Jerome, evidently regarding the phrase as a curiosity, informs us that 'juxta antiqua exemplaria' it was met with in St.Luke xiv.