(13) If the house be worthy.--The doubt implied in the "if" seems at first somewhat inconsistent with the supposition that they only went into the house after having ascertained the worthiness of the occupant. It must be remembered, however, that the missionaries entered each city or village as strangers, and that in such a case even the most careful inquiry might not always be successful.

Let your peace come upon it--i.e., the peace implied in the formula of salutation. The imperative is not so much a command addressed to them as the proclamation of an edict from the King in whose name they went. Their greeting was not to be a mere ceremonious form. It would be as a real prayer wherever the conditions of peace were fulfilled on the other side. At the worst, the prayer for peace would bring a blessing on him who prayed.

Verse 13. - And if the house. Not the householder alone (ver. 11), but he and his family as a whole. Be worthy, let your peace come upon it: but if it be not worthy, let your peace return to you. It is tempting to see in these words a promise that your activity shall at least issue in increased blessing on yourselves, but it can hardly be pressed so far. It rather means that failure to impart blessing shall not bring spiritual loss to yourselves. "The dove returned to the ark again when it found the earth under water" (cf. Gurnall, in Ford).

10:5-15 The Gentiles must not have the gospel brought them, till the Jews have refused it. This restraint on the apostles was only in their first mission. Wherever they went they must proclaim, The kingdom of heaven is at hand. They preached, to establish the faith; the kingdom, to animate the hope; of heaven, to inspire the love of heavenly things, and the contempt of earthly; which is at hand, that men may prepare for it without delay. Christ gave power to work miracles for the confirming of their doctrine. This is not necessary now that the kingdom of God is come. It showed that the intent of the doctrine they preached, was to heal sick souls, and to raise those that were dead in sin. In proclaiming the gospel of free grace for the healing and saving of men's souls, we must above all avoid the appearance of the spirit of an hireling. They are directed what to do in strange towns and cities. The servant of Christ is the ambassador of peace to whatever place he is sent. His message is even to the vilest sinners, yet it behoves him to find out the best persons in every place. It becomes us to pray heartily for all, and to conduct ourselves courteously to all. They are directed how to act as to those that refused them. The whole counsel of God must be declared, and those who will not attend to the gracious message, must be shown that their state is dangerous. This should be seriously laid to heart by all that hear the gospel, lest their privileges only serve to increase their condemnation.And if the house be worthy,.... If the family, and particularly the master of it, appeared to be civil, courteous, friendly, and hospitable, upon such a salutation, and ready to receive and embrace them, and provide for them,

let your peace come upon it, or it shall come upon it; the imperative for the future, which is not unusual; and so read the Syriac and Vulgate Latin. The sense is, the peace the apostles wished for, in their form of salutation, should come, and abide on the family; for not the Gospel of peace, and the preaching of it, are here meant, but the salutation itself, or the things desired in it, which should be granted, and the house be blessed for their sake, and as a reward of their generosity, and hospitality:

but if it be not worthy: does not prove to be what it was said to be, and they expected; namely, to be generous, liberal, and beneficent; but, on the contrary, uncivil and churlish, should neglect their salutation, discover an unwillingness to receive them, and turn their backs upon them:

let your peace return to you, or "it shall return to you"; the happiness wished for shall not come upon them, and the prayers and good wishes of the apostles shall be void, and of none effect, with respect to that family, but should be made good to themselves; and they should be directed to another house, where they should find persons more generous and free to entertain them.