SN 22.78 wrote:
“When the lion, the king of beasts, roars, whatever animals hear the sound are for the most part filled with fear, a sense of urgency, and terror. Those who live in holes enter their holes; those who live in the water enter the water; those who live in the woods enter the woods; and the birds fly up into the air. Even those royal bull elephants, bound by strong thongs in the villages, towns, and capital cities, burst and break their bonds asunder; frightened, they urinate and defecate and flee here and there. So powerful, bhikkhus, is the lion, the king of beasts, among the animals, so majestic and mighty.
“So too, bhikkhus, when the Tathagata arises in the world, an arahant, perfectly enlightened, accomplished in true knowledge and conduct, fortunate, knower of the world, unsurpassed leader of persons to be tamed, teacher of devas and humans, the Enlightened One, the Blessed One, he teaches the Dhamma thus: ‘Such is form, such its origin, such its passing away; such is feeling … such is perception … such are volitional formations … such is consciousness, such its origin, such its passing away.’
“Then, bhikkhus, when those devas who are long-lived, beautiful, abounding in happiness, dwelling for a long time in lofty palaces, hear the Tathagata’s teaching of the Dhamma, they are for the most part filled with fear, a sense of urgency, and terror, saying: ‘It seems, sir, that we are impermanent, though we thought ourselves permanent; it seems, sir, that we are unstable, though we thought ourselves stable; it seems, sir, that we are noneternal, though we thought ourselves eternal. It seems, sir, that we are impermanent, unstable, noneternal, included within identity.’ So powerful, bhikkhus, is the Tathagata over this world together with its devas, so majestic and mighty.”