6 Forasmuch then as all these things have been done for you, emulate and imitate His victory. And should any one approach you of those who are that evil spirit's servants, and savor the things that be of him, upbraiding you and saying, “If you are marvellous and great, remove the mountain;” be not troubled, nor confounded, but answer with meekness, and say some such thing as you have heard your Lord say: “You shall not tempt the Lord your God.”
Or should he, offering glory and dominion, and an endless amount of wealth, enjoin you to worship him, stand again manfully. For neither did the devil deal so with the common Lord of us all only, but every day also he brings these his machinations to bear on each of His servants, not in mountains only and in wildernesses, nor by himself: but in cities likewise, in market-places, and in courts of justice, and by means of our own kindred, even men. What then must we do? Disbelieve him altogether, and stop our ears against him, and hate him when he flatters, and when he proffers more, then so much the more shun him. Because in Eve's case also, when he was most lifting her up with hopes, then he cast her down, and did her the greatest evils. Yea, for he is an implacable enemy, and has taken up against us such war as excludes all treaty. And we are not so earnest for our own salvation, as he is for our ruin. Let us then shun him, not with words only, but also with works; not in mind only, but also in deed; and let us do none of the things which he approves, for so shall we do all those which God approves. Yea, for he makes also many promises, not that he may give, but that he may take. He promises by rapine, that he may deprive us of the kingdom, and of righteousness; and sets treasures in the earth as a kind of gins or traps, that he may deprive us both of these and of the treasures in Heaven, and he would have us be rich here, that we may not be rich there.
And if he should not be able by wealth to cast us out of our portion there, he comes another way, the way of poverty; as he did with respect to Job. That is, when he saw that wealth did him no harm, he weaves his toils by poverty, expecting on that side to get the better of him. But what could be more foolish than this? Since he that has been able to bear wealth with moderation, much more will he bear poverty with manliness; and he who desires not riches when present, neither will he seek them when absent; even as that blessed man did not, but by his poverty, on the other hand, he became still more glorious. For of his possessions that wicked demon had power indeed to deprive him, but his love toward God he not only could not take away, but made it even stronger, and when he had stripped him of all, he caused him to abound with more blessings; wherefore also he was in perplexity. For the more plagues he brought upon him, the more mighty he then saw him become. And therefore, as you know, when he had gone through all, and had thoroughly tried his metal, because he made no way, he ran to his old weapon, the woman, and assumes a mask of concern, and makes a tragical picture of his calamities in most pitiable tone, and feigns that for removal of his evil he is introducing that deadly counsel. But neither so did he prevail; nay, for his bait was perceived by that wondrous man, who with much wisdom stopped the mouth of the woman speaking at his instigation.
Just so we likewise must act: though it be a brother, a tried friend, a wife, whom you will of those nearest to us, whom he has entered into, and so utters something not convenient, we must not receive the counsel for the person of him who so speaks, but for the deadly counsel turn away from the speaker. Since in fact now also he does many such things, and puts before him a mask of sympathy, and while he seems to be friendly, he is instilling his pernicious words, more grievous than poisons. Thus, as to flatter for evil is his part, so to chastise for our good, is God's.
Source: Homilies on the Gospel of St. Matthew (New Advent)