Isaias 56:10

But some most worthless persons are in the habit of carrying about the name [of Jesus Christ] in wicked guile, while yet they practise things unworthy of God, and hold opinions contrary to the doctrine of Christ, to their own destruction, and that of those who give credit to them, whom you must avoid as ye would wild beasts. For “the righteous man who avoids them is saved for ever; but the destruction of the ungodly is sudden, and a subject of rejoicing.” For “they are dumb dogs, that cannot bark,” raving mad, and biting secretly, against whom ye must be on your guard, since they labour under an incurable disease. But our Physician is the only true God, the unbegotten and unapproachable, the Lord of all, the Father and Begetter of the only-begotten Son. …

29. Lastly, he addeth, “The tongue of Thy dogs out of enemies by Himself,” calling those very same that had been about to strive for the faith of the Gospel, even dogs, as though barking for their Lord. Not those dogs, whereof saith the Apostle, “Beware of dogs:” but those that eat of the crumbs which fall from the table of their masters. For having confessed this, the woman of Canaan merited to hear, “O woman, great is thy faith, be it done to thee as thou wilt.” Dogs commendable, not abominable; observing fidelity towards their master, and before his house barking against enemies. …

3. “How long will ye judge unrighteously, and accept the persons of the ungodly” ( ver. 2 ); as in another place, “How long are ye heavy in heart?” Until He shall come who is the light of the heart? I have given a law, ye have resisted stubbornly: I sent Prophets, ye treated them unjustly, or slew them, or connived at those who did so. But if they are not worthy to be even spoken to, who slew the servants of God that were sent to them, ye who were silent when these things were doing, that is, ye who would imitate as if they were innocent those who then were silent, “how long will ye judge unrighteously, and accept the persons of the ungodly?” If the Heir comes even now, is He to be slain? Was He not willing for your sake to become as it were a child under guardians? Did not He for your sake hunger and thirst like one in need? Did He not cry to you, “Learn of Me, for I am meek and lowly o …

The ruler should be discreet in keeping silence, profitable in speech; lest he either utter what ought to be suppressed or suppress what he ought to utter. For, as incautious speaking leads into error, so indiscreet silence leaves in error those who might have been instructed. For often improvident rulers, fearing to lose human favour, shrink timidly from speaking freely the things that are right; and, according to the voice of the Truth ( Joh. x. 12 ), serve unto the custody of the flock by no means with the zeal of shepherds, but in the way of hirelings; since they fly when the wolf cometh if they hide themselves under silence. For hence it is that the Lord through the prophet upbraids them, saying, Dumb dogs, that cannot bark ( Isai. lvi. 10 ). …