Our Lord had just before said, that he who is in the field must not return back; and lest this should seem to have been spoken of those only who would openly return from the field, that is, who would publicly deny their Lord, He goes on to shew, that there are some who, while seeming to turn their face forward, are yet in their heart looking behind.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).