until death puts an end (idiom); one's whole life

from that

think again and again before acting (idiom); consider carefully in advance

place sb on a field of death and he will fight to live (idiom based on Sunzi's "The Art of War" [[孫子兵法|孙子兵法<SūnzǐBīngfǎ>]]); to fight desperately when confronting mortal danger

to bend to a task and spare no effort unto one's dying day (idiom); striving to the utmost one's whole life