Hilary of Poitiers

They are forbidden to keep gold, silver or money in their belts, to carry a wallet for their journey, to keep two tunics, or sandals, or to take a staff in hand. The laborer deserves his food. Does it not cause envy, as I believe, to carry money in one’s belt? And what does the forbidden possession of gold, silver and copper in one’s belt signify? The belt is the equipment of the ministry, and the sash helps one to work efficiently. Therefore we are warned about anything in our ministry that is of monetary value, nor should the possession of gold, silver and copper become necessary for our apostolic mission. “Take no wallet for your journey.” Leave behind any concern for worldly goods. All treasure on earth is detrimental, for where our treasure is, there our heart will be. “Nor two tunics.” The garment of Christ is all we will ever need. And, because of the depravity of our mind, we should not put on any other garment, either of a heretical sect or of the law. “Nor sandals.” Are frail humans capable of going barefoot? On holy ground covered with thorns and briars, as God said to Moses, we are urged to stand firm with bare feet and to have no other footwear for our journey than what we have received from Christ. “Nor staff in hand,” that is, the possession of external power, or unworthily holding a staff from the root of Jesse—for whatever else it may be, it will not be the staff of Christ. Rather, we are to be equipped for our journey in the world with every higher level of language, grace, travel fare, clothes, footwear and power. Following these directions, we shall be found worthy of our reward; that is, through observance of them, we will receive the reward of heavenly hope.

Neither a staff; that is, We are not to seek rights of extraneous power, having a rod from the root of Jesse.

The Apostles salute the house with the prayer of peace; yet so as that peace seems rather spoken than given. For their own peace which was the bowels of their pity ought not to rest upon the house if it were not worthy; then the sacrament of heavenly peace could be kept within the Apostles own bosom. Upon such as rejected the precepts of the heavenly kingdom an eternal curse is left by the departure of the Apostles, and the dust shaken from their feet; And whosoever shall not receive you, nor hear your words, when ye go out of that house, or that town, cast the dust off your feet. For he that lives in any place seems to have a kind of fellowship with that place. By the casting the dust off the feet therefore all that belonged to that house is left behind, and nothing of healing or soundness is borrowed from the footsteps of the Apostles having trod their soil.

Figuratively, The Lord teaches us not to enter the houses or to mix in the acquaintance of those who persecute Christ, or who are ignorant of Him; and in each town to enquire who among them is worthy, i. e. where there is a Church wherein Christ dwells; and not to pass to another, because this house is worthy, this host is our right host. But there would be many of the Jews who would be so well disposed to the Law, that though they believed in Christ because they admired His works, yet they would abide in the works of the Law; and others again who, desiring to make trial of that liberty which is in Christ, would feign themselves ready to forsake the Law for the Gospel; many also would be drawn aside into heresy by perverse understanding. And since all these would falsely maintain that with them only was Catholic verity, therefore we must with great caution seek out the house, i. e. the Church.

These things really baffle the mind. For if the apostles are not to submit to hospitality unless they first inquire who is worthy, how will the house later be found unworthy? And what if the host does not listen to their words and does not receive them? Either there is no fear of this in the well-intentioned person, or, if he is found unworthy, there is no point in sharing his dwelling. And what good will it do to inquire who is worthy if respect and punishment are advised regarding an unworthy host? But the Lord instructs them to desire no part of the home and hospitality of those who either reproach Christ or turn a deaf ear to him. In each town they are to inquire who in the house is worthy, that is, if the church and Christ are inhabitants there, and not to move on to anywhere else if the house is worthy and the host well-intentioned.There would be many Jews with a great affection for the law who, although they might believe in Christ out of admiration for his works, still lingered in the works of the law. And others, curious to explore the freedom that is in Christ, would pretend they were going over to the gospel from the law. Many others, too, would be led into heresy out of a misguided understanding. And since all those who deceive and flatter their listeners in this way claim they have the catholic truth, he forewarned his apostles that they must inquire whether the person they are to dwell with is worthy. And since naïve persons might go along with the ideas of the host through deceptive words, one must make cautious use of a house that was called worthy, that is, the church that is called catholic. He directs that it should be saluted peaceably, so that peace is spoken rather than given. For thus he instructed them: “Salute it, saying, ‘Peace to this house.’ ” Hence their peaceful greeting is in words and must be tendered as a gesture. Furthermore, he said that peace itself, which is the very heart of compassion, ought not to come to that house unless it is worthy. If that house is not found worthy, the homage of heavenly peace must be withheld.

Figuratively, The Lord teaches us not to enter the houses or to mix in the acquaintance of those who persecute Christ, or who are ignorant of Him; and in each town to enquire who among them is worthy, i. e. where there is a Church wherein Christ dwells; and not to pass to another, because this house is worthy, this host is our right host. But there would be many of the Jews who would be so well disposed to the Law, that though they believed in Christ because they admired His works, yet they would abide in the works of the Law; and others again who, desiring to make trial of that liberty which is in Christ, would feign themselves ready to forsake the Law for the Gospel; many also would be drawn aside into heresy by perverse understanding. And since all these would falsely maintain that with them only was Catholic verity, therefore we must with great caution seek out the house, i. e. the Church.

The wolves indeed are all such as should pursue the Apostles with mad fury.

He first attempted the softer sex, allured her by hope, and promised a share of immortality. Do you in like manner seize every opportunity, look well into each man's nature and inclination, use wisdom of speech, reveal hope of good things to come; that what he promised falsely we may preach truly according to God's promise, that they that believe shall be like to the Angels.

Who will endeavour to extort from you either to be silent or to temporize.

And by this their testimony not only was all excuse of ignorance of His divinity taken away from their persecutors, but also to the Gentiles was opened the way of believing on Christ, who was thus devotedly preached by the voices of the confessors among the flames of persecution; and this is that He adds, and the Gentiles.

Figuratively; That which is sold is our soul and body, and that to which it is sold, is sin. They then who sell two sparrows for a farthing, are they who sell themselves for the smallest sin, born for flight, and for reaching heaven with spiritual wings. (vid. Ps. 124:7.) Caught by the bait of present pleasures, and sold to the enjoyment of the world, they barter away their whole selves in such a market. It is of the will of God that one of them rather soar aloft; but the law proceeding according to God's appointment decrees that one of them should fall. In like manner as, if they soared aloft they would become one spiritual body; so, when sold under sin, the soul gathers earthly matter from the pollution of vice, and there is made of them one body which is committed to earth.

For when any thing is numbered it is carefully watched over.

For it is an unworthy task to number things that are to perish. Therefore that we should know that nothing of us should perish, we are told that our very hairs are numbered. No accident then that can befal our bodies is to be feared; thus He adds, Fear not, ye are better than many sparrows.

Or this, ye are better than many sparrows, teaches that the elect faithful are better than the multitude of the unbelieving, for the one fall to earth, the other fly to heaven.