noun
God's will; heaven's decree; mandate of Heaven; fate; destiny
Refers to a divine or cosmic plan, often in a philosophical or religious context. Can be used for both Western 'God's will' and East Asian concepts like the Mandate of Heaven.
彼は自分の天命を信じていた。
He believed in his destiny.
天命に従って生きる。
Live according to heaven's will.
noun
one's life; one's lifespan
A somewhat literary or old-fashioned way to refer to the length or course of a person's life, often with a nuance of fate or divine allotment.
天命を全うする。
Fulfill one's natural lifespan.