# do not let him go free from punishment

This can be expressed positively. Alternate translation: "be sure to punish him" (See: [[rc://en/ta/man/translate/figs-doublenegatives]])

# bring his gray head down to the grave with blood

Blood is a metonym for violent death, and the head is synecdoche for the whole person. Alternate translation: "make sure he dies a violent death" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-synecdoche]])