Aging and death are rolling in...

"What do you think, great king? Suppose a man, trustworthy and reliable, were to come to you from the east and on arrival would say: 'If it please your majesty, you should know that I come from the east. There I saw a great mountain, as high as the clouds, coming this way, crushing all living beings [in its path]. Do whatever you think should be done.' Then a second man were to come to you from the west... Then a third man were to come to you from the north... Then a fourth man were to come to you from the south and on arrival would say: 'If it please your majesty, you should know that I come from the south. There I saw a great mountain, as high as the clouds, coming this way, crushing all living beings. Do whatever you think should be done.' If, great king, such a great peril should arise, such a terrible destruction of human life — the human state being so hard to obtain — what should be done?"

"If, lord, such a great peril should arise, such a terrible destruction of human life — the human state being so hard to obtain — what else should be done but Dhamma-conduct, right conduct, skillful deeds, meritorious deeds?"

"I inform you, great king, I announce to you, great king: aging and death are rolling in on you. When aging and death are rolling in on you, great king, what should be done?"

"As aging and death are rolling in on me, lord, what else should be done but Dhamma-conduct, right conduct, skillful deeds, meritorious deeds?

Pabbatopama Sutta
The Simile of the Mountains