1 Kings 22:9

Now I ask again, whence have my accusers obtained this letter also? I would learn of them who it was that put it into their hands? Do you cause them to answer. By this you may perceive that they have forged this, as they spread abroad also the former letter, which they published against me, with reference to the ill-named Magnentius. And being convicted in this instance also, on what pretence next will they bring me to make my defence? Their only concern is, to throw everything into disorder and confusion; and for this end I perceive they exercise their zeal. Perhaps they think that by frequent repetition of their charges, they will at last exasperate you against me. But you ought to turn away from such persons, and to hate them; for such as themselves are, such also they imagine those to be who listen to them; and they think that their calumnies will prevail even before you. …

75. The Lord also in the Gospel rejected those coming to Him with guile, saying: “The foxes have holes,” for He bids us live in simplicity and innocency of heart. David also says: “Thou hast used deceit as a sharp razor,” pointing out by this the treacherous man, just as an implement of this kind is used to help adorn a man, yet often wounds him. If any one makes a show of favour and yet plans deceit after the example of the traitor, so as to give up to death him whom he ought to guard, let him be looked on in the light of that instrument which is wont to wound owing to the vice of a drunken mind and a trembling hand. Thus that man drunk with the wine of wickedness brought death on the high priest Ahimelech, through a terrible act of treachery, because he had received the prophet with hospitality when the king, roused by the stings of envy, was following him.

Instructed by which examples, the blessed Apostle James also, and all the chief princes of the primitive Church urged the Apostle Paul in consequence of the weakness of feeble persons to condescend to a fictitious arrangement and insisted on his purifying himself according to the requirements of the law, and shaving his head and paying his vows, as they thought that the present harm which would come from this hypocrisy was of no account, but had regard rather to the gain which would result from his still continued preaching. For the gain to the Apostle Paul from his strictness would not have counterbalanced the loss to all nations from his speedy death. And this would certainly have been then incurred by the whole Church unless this good and salutary hypocrisy had preserved him for the preaching of the Gospel. …