Theophylact of Ohrid
Catena Aurea · Lukasevangelium 10
And into whatever house ye enter, first say, Peace be to this house. And if the son of peace be there, your peace shall rest upon it: if not, it shall turn to you again. And in the same house remain, eating and drinking such things as they give; for the labourer s worthy of his hire. Go not from house to house. And into whatsoever city ye enter, and they receive you, eat such things as are set before you: And heal the sick that are therein, and say unto them, The kingdom of God is come nigh unto you. But into whatsoever city ye enter, and they receive you not, go your ways out into the streets of the same, and say, Even the very dust of your city, which cleaveth on us, we do wipe off against you: notwithstanding be ye sure of this, that the kingdom of God is come nigh unto you. But I say unto you, that it shall be more tolerable in that day for Sodom, than for that city.
Although they be few and poor, ask for nothing more; He also tells them to work miracles, and their word shall draw men to their preaching. Hence he adds, And heal the sick that are therein, and say to them, The kingdom of God is come nigh unto you. For if you first heal and then teach, the word will prosper, and men believe that the kingdom of God is come nigh. For they would not be cured unless by the working of some divine power. But also when they are healed in their soul, the kingdom of God comes nigh unto them, for it is far off from him over whom sin has the dominion.