But in a mystical sense the disciples pass through the corn fields, when the holy doctors look with the care of a pious solicitude upon those whom they have initiated in the faith, and who, it is implied, are hungering for the best of all things, the salvation of men.
But to pluck the ears of corn means to snatch men away from the eager desire of earthly things. And to rub with the hands is by example of virtue to put from the purity of their minds the concupiscence of the flesh, as men do husks. To eat the grains is when a man, cleansed from the filth of vice by the mouths of preachers, is incorporated amongst the members of the Church.
Again, fitly are the disciples related to have done this, walking before the face of the Lord, for it is necessary that the discourse of the doctor should come first, although the grace of visitation from on high, following it, must enlighten the heart of the hearer. As well, on the sabbath-day, for the doctors themselves in preaching labour for the hope of future rest, and teach their hearers to toil over their tasks for the sake of eternal repose.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).