Luke 10:5,6 - Joseph Benson’s Commentary on the Old and New Testaments

Into whatsoever house ye enter, &c. They are supposed to enter into private houses; for, not being admitted into the synagogues, they were forced to preach where they could have liberty. First say, Peace be to this house To all under this roof, to this family, and all that belong to it. As if he had said, In all the stages of your journey, carry along with you those benevolent affections which are so well suited to the design of your mission. Peace be to you, was the common form of salutation among the Jews. They must not use it in formality, and according to custom, to those they meet on the way; but they must use it with solemnity and seriousness to those into whose houses they entered. And if the son of peace Or any truly pious man who is worthy of such a blessing; be there In the house; your peace shall rest upon it Your prayer for the peace and prosperity of the family shall be heard and answered. Or, the blessing which you gave at your entrance, shall, by my power, be made effectual to that house, and shall remain with it. If not, it shall turn, &c. You will meet with some that are not disposed to hear or regard your message; even whole houses that have not one son of peace in them. Now it is certain your peace shall not come upon them; they shall have no part nor lot in the matter: the blessing that shall rest upon the sons of peace shall never come upon the sons of Belial; nor can any expect the privileges of the covenant of grace that will not come under the bonds of it; but it shall turn to you again You shall have the comfort of having discharged your trust, and done your duty to God.