1 All the commandments which I command thee this day shall ye observe to do, that ye may live, and multiply, and go in and possess the land which the LORD sware unto your fathers. 2 And thou shalt remember all the way which the LORD thy God led thee these forty years in the wilderness, to humble thee, and to prove thee, to know what was in thine heart, whether thou wouldest keep his commandments, or no. 3 And he humbled thee, and suffered thee to hunger, and fed thee with manna, which thou knewest not, neither did thy fathers know; that he might make thee know that man doth not live by bread only, but by every word that proceedeth out of the mouth of the LORD doth man live. 4 Thy raiment waxed not old upon thee, neither did thy foot swell, these forty years. 5 Thou shalt also consider in thine heart, that, as a man chasteneth his son, so the LORD thy God chasteneth thee. 6 Therefore thou shalt keep the commandments of the LORD thy God, to walk in his ways, and to fear him. 7 For the LORD thy God bringeth thee into a good land, a land of brooks of water, of fountains and depths that spring out of valleys and hills; 8 A land of wheat, and barley, and vines, and fig trees, and pomegranates; a land of oil olive, and honey; 9 A land wherein thou shalt eat bread without scarceness, thou shalt not lack any thing in it; a land whose stones are iron, and out of whose hills thou mayest dig brass. 10 When thou hast eaten and art full, then thou shalt bless the LORD thy God for the good land which he hath given thee. 11 Beware that thou forget not the LORD thy God, in not keeping his commandments, and his judgments, and his statutes, which I command thee this day: 12 Lest when thou hast eaten and art full, and hast built goodly houses, and dwelt therein; 13 And when thy herds and thy flocks multiply, and thy silver and thy gold is multiplied, and all that thou hast is multiplied; 14 Then thine heart be lifted up, and thou forget the LORD thy God, which brought thee forth out of the land of Egypt, from the house of bondage; 15 Who led thee through that great and terrible wilderness, wherein were fiery serpents, and scorpions, and drought, where there was no water; who brought thee forth water out of the rock of flint; 16 Who fed thee in the wilderness with manna, which thy fathers knew not, that he might humble thee, and that he might prove thee, to do thee good at thy latter end; 17 And thou say in thine heart, My power and the might of mine hand hath gotten me this wealth. 18 But thou shalt remember the LORD thy God: for it is he that giveth thee power to get wealth, that he may establish his covenant which he sware unto thy fathers, as it is this day. 19 And it shall be, if thou do at all forget the LORD thy God, and walk after other gods, and serve them, and worship them, I testify against you this day that ye shall surely perish. 20 As the nations which the LORD destroyeth before your face, so shall ye perish; because ye would not be obedient unto the voice of the LORD your God.
[AD 60] Matthew on Deuteronomy 8:3
Then was Jesus led up of the Spirit into the wilderness to be tempted of the devil. And when he had fasted forty days and forty nights, he was afterward an hungred. And when the tempter came to him, he said, If thou be the Son of God, command that these stones be made bread. But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God. [Deuteronomy 8:3]
[AD 61] Luke on Deuteronomy 8:3
And Jesus being full of the Holy Ghost returned from Jordan, and was led by the Spirit into the wilderness, Being forty days tempted of the devil. And in those days he did eat nothing: and when they were ended, he afterward hungered. And the devil said unto him, If thou be the Son of God, command this stone that it be made bread. And Jesus answered him, saying, It is written, That man shall not live by bread alone, but by every word of God. [Deuteronomy 8:3]
[AD 215] Clement of Alexandria on Deuteronomy 8:3
One who possesses the Word, who is almighty God, needs nothing and never lacks any of the things he desires, for the Word is an infinite possession and the source of all our wealth. However, someone may object and insist that he has often seen the just in need of food. This is rare and happens only where no one else is just. Besides, let him read the beautiful sentence, “It is not by bread alone that the just man lives, but by the Word of the Lord,” who is the true bread, the bread of heaven. The good man is never really in want as long as he keeps intact his adherence to faith in God. For he can ask for and receive whatever he needs from the Father of all, and he can enjoy whatever belongs to him, if only he obey his Son. Then too, he has this advantage, that he can be free from feeling any want. The Word, who acts as our educator, gives us riches. There is no need to envy the wealth of others with those who have gained freedom from want through him. He who possesses this sort of wealth will inherit the kingdom of God.

[AD 1781] Richard Challoner on Deuteronomy 8:3
Not in bread alone: That is, that God is able to make food of what he pleases for the support of man.
[AD 373] Ephrem the Syrian on Deuteronomy 8:4
Nourish your soul with the fear of God, and God will nourish [your] body. Do these things, so that what you yourself are unable [to procure] may be given you by God. Take note of this, if God does not give the rain and the wind, it avails you naught, even if you are anxious. Obey God, therefore, and creation will obey your needs. If God nourished Israel for forty years in the desert, while they were murmuring and disbelieving, and effortlessly preserved their sandals and clothing, how much more so in the case of believers?

[AD 397] Ambrose of Milan on Deuteronomy 8:4
Is he not good, who in the wilderness fed with bread from heaven such countless thousands of the people, lest any famine should assail them, without need of toil, in the enjoyment of rest? For the space of twenty years, their raiment grew not old, nor were their shoes worn, a figure, which, to the faithful, points to the resurrection that is to come. This shows that the glory of great deeds and the beauty of the power by which he has clothed us and the stream of human life is not absurd, not for nothing.

[AD 430] Augustine of Hippo on Deuteronomy 8:4
God granted to the garments of the Israelites their proper state without any damage for forty years. If so, how much more does he grant a very happy temperament of certain state to the bodies of those who obey his command until they may be turned into something better? This embetterment occurs not by the death of man, by which the body is deserted by the soul, but by a blessed change from mortality to immortality, from an animal to a spiritual quality.

[AD 430] Augustine of Hippo on Deuteronomy 8:4
If the garments of the Israelites could last without wearing out for so many years in the desert and the hides of dead animals could continue undestroyed for so long a time in their shoes, surely God can extend the quality of incorruption in certain bodies for as long as he wills. I think therefore that the body of the Lord is the same now in heaven as it was when he ascended into heaven.

[AD 407] John Chrysostom on Deuteronomy 8:10
Do you see how it is especially appropriate after the enjoyment of food to set a spiritual meal for yourself lest the soul, after satiety of bodily food, should lose its zest and fall into some disaster and make way for the wiles of the devil, who is always looking for an opportunity and anxious to deliver us a blow at a critical moment?

[AD 1781] Richard Challoner on Deuteronomy 8:15
The Dipsas: A serpent whose bite causeth a violent thirst; from whence it has its name, for in Greek dipsa signifies thirst.
[AD 397] Ambrose of Milan on Deuteronomy 8:17
Such a one is he who ascribes all his success to his own merits and hence, feeling self-assured, does not recognize his own errors which drag him with their extended rope afar. For, if he believes that his acquisition of property is due either to mere chance or to shrewd cunning, there is no occasion for him to feel undue pride in matters to which there is no glory attached, or where the labor results in nothing, or where there is evidence of shameless cupidity, which prescribes no limits in its pursuit of pleasure.

[AD 215] Clement of Alexandria on Deuteronomy 8:18
By these words [Scripture] is showing clearly that it is God who grants us gifts of good things and that we ought as servants of the grace of God to sow God’s gracious gifts and enable our neighbors to become people of honor. The aim is for the man of self-control to enable those who are continent to find their fulfillment, the man of courage to do the same for the noble, the man of practical wisdom for the understanding, and the man of justice for the just.