St. Gregory the Great, The Book of Pastoral Rule, pp. 54-55
For just as reckless speaking leads someone into error, so indiscreet silence leaves in error those who might have been instructed. For often, reckless directors, who fear to lose human favor, are afraid to speak freely about what is right. And, according to the voice of the Truth, they fail to attend to the care of their flock as shepherds and act instead as mercenaries [John 10:12]. This is because they flee and hide themselves in silence whenever a wolf approaches. Thus, the Lord scolds them through the prophet, saying: "Dumb dogs, who cannot bark" [Is. 56:10]. Again he complains, saying: "You have not gone up against the enemy nor have you built a wall for the house of Israel to stand in battle of the day of the Lord" [Ez. 13:5]. Indeed, to "go up against the enemy" is to oppose worldly powers with a free voice in the defense of the flock. And to "stand in battle on the day of the Lord" is to resist, our of love of justice, evil persons who oppose us. For if a shepherd fears to say what is right, what else is it but to turn his back in silence? But certainly, if he puts himself before the flock [so as to protect them], he "builds a wall for the house of Israel" against its enemies.
Afterfeast of the Transfiguration of our Lord
Troparion, Tone 7
You were transfigured on the mountain, O Christ God, revealing Your glory to Your disciples as far as they could bear it. Let Your everlasting Light also shine upon us sinners, through the prayers of the Theotokos. O Giver of Light, glory to You!
Kontakion, Tone 7
On the Mountain You were Transfigured, O Christ God, and Your disciples beheld Your glory as far as they could see it; so that when they would behold You crucified, they would understand that Your suffering was voluntary, and would proclaim to the world, that You are truly the Radiance of the Father!