The Pastoral Guide
By Pope St Gregory the Great
"Pastors who lack foresight hesitate to say openly what is right because they fear losing the favor of men. As the voice of truth tells us, such leaders are not zealous pastors who protect their flocks, rather they are like mercenaries who flee by taking refuge in silence when the wolf appears. The Lord reproaches them through the prophet: They are dumb dogs that cannot bark.
On another occasion he complains: You did not advance against the foe or set up a wall in front of the house of Israel, so that you might stand fast in battle on the day of the Lord. To advance against the foe involves a bold resistance to the powers of this world in defense of the flock. To stand fast in battle on the day of the Lord means to oppose the wicked enemy out of love for what is right.
When a pastor has been afraid to assert what is right, has he not turned his back and fled by remaining silent? Whereas if he intervenes on behalf of the flock, he sets up a wall against the enemy in front of the house of Israel…The word of reproach is a key that unlocks a door, because reproach reveals a fault of which the evildoer is himself often unaware."