5 Let us see then how we must understand what the Lord enjoined on them whom He sent to preach the Gospel, and let us consider in our mind this prepared harvest. “Carry,” He says, “neither purse, nor scrip, nor shoes; and salute no man by the way. And into whatsoever house ye enter, say, Peace be to this house. If the Son of peace be there, your peace shall rest upon it; if not, it shall return to you again.” If it has “rested,” has the other lost it? This be far from the mind of Saints! So then this is not to be taken in a carnal sense; and hence it may be neither are the “purse,” nor “shoes,” nor “scrip;” nor above all that, where if we take it simply without examination, pride seems to be enjoined us, that we “salute no man by the way.”
Source: Sermons on Selected Lessons of the New Testament (New Advent)