8 “And into whatsoever city or town you shall enter, inquire who in it is worthy: and there abide till ye go thence.”
That is, “it follows not,” says He, “from my saying, 'The workman is worthy of his meat,' that I have opened to you all men's doors: but herein also do I require you to use much circumspection. For this will profit you both in respect of your credit, and for your very maintenance. For if he is worthy, he will surely give you food; more especially when you ask nothing beyond mere necessaries.”
And He not only requires them to seek out worthy persons, but also not to change house for house, whereby they would neither vex him that is receiving them, nor themselves get the character of gluttony and self-indulgence. For this He declared by saying, “There abide till ye go thence.” And this one may perceive from the other evangelists also.
Do you see how He made them honorable by this also, and those that received them careful; by signifying that they rather are the gainers, both in honor, and in respect of advantage?
Then pursuing again the same subject, He says,
“And when you come into an house, salute it. And if the house be worthy, let your peace come upon it; but if it be not worthy, let your peace return to you.”
Do you see how far He declines not to carry His injunctions? And very fitly. For as champions of godliness, and preachers to the whole world, was He training them. And in that regard disposing them to practise moderation, and making them objects of love, He says,
“And whosoever shall not receive you, nor hear your words, when you depart out of that house or city, shake off the dust of your feet. Verily I say unto you, it shall be more tolerable for the land of Sodom and Gomorrha in the day of judgment, than for that city.”
That is, “do not,” says He, “because you are teachers, therefore wait to be saluted by others, but be first in showing that respect.” Then, implying that this is not a mere salutation, but a blessing, He says, “If the house be worthy, it shall come upon it,” but if it deal insolently, its first punishment will be, not to have the benefit of your peace; and the second, that it shall suffer the doom of Sodom. “And what,” it will be said, “is their punishment to us?” You will have the houses of such as are worthy.
But what means, “Shake off the dust of your feet?” It is either to signify their having received nothing of them, or to be a witness to them of the long journey, which they had travelled for their sake.
But mark, I pray you, how He does not even yet give the whole to them. For neither does He as yet bestow upon them foreknowledge, so as to learn who is worthy, and who is not so; but He bids them inquire, and await the trial. How then did He Himself abide with a publican? Because he was become worthy by his conversion.
And mark, I pray you, how when He had stripped them of all, He gave them all, by suffering them to abide in the houses of those who became disciples, and to enter therein, having nothing. For thus both themselves were freed from anxiety, and they would convince the others, that for their salvation only are they come; first by bringing in nothing with them, then by requiring no more of them than necessaries, lastly, by not entering all their houses without distinction.
Since not by the signs only did He desire them to appear illustrious, but even before the signs, by their own virtue. For nothing so much characterizes strictness of life, as to be free from superfluities, and so far as may be, from wants. This even the false apostles knew. Wherefore Paul also said, “That wherein they glory, they may be found even as we.”
But if when we are in a strange country, and are going unto persons unknown to us, we must seek nothing more than our food for the day, much more when abiding at home.
Source: Homilies on the Gospel of St. Matthew (New Advent)