Prayer of St. Isaac the Syrian for Mercy on All

O Lord, grant me a merciful heart — a heart burning with love for all creation, for men, for birds, for beasts, for demons, for every creature. When such a man thinks of them or looks at them, his eyes fill with tears because of the great compassion that grips his heart. His heart is humbled and he cannot bear to hear or see any suffering or the smallest sorrow in any creature. Therefore he prays with tears at every hour, even for the enemies of truth and for those who do him harm, that they may be preserved and purified. Amen.