Job speaks of unrighteous people who persecute others as if they were wild animals that attack their victims by picking them up between their teeth. AT: "I made unrighteous people stop persecuting people, like someone who breaks the jaw of a wild animal and rescues its victim from between its teeth" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Here "nest" represents Job's home and family. Job used to speak as if he were a bird that lived in a nest with his baby birds. AT: "I will die at home with my family" or "I will die in the safety of my home" (See: [[rc://en/ta/man/translate/figs-metaphor]])
There are more grains of sand on the shore than anyone can count. To say that he would live more days than anyone could count is an exaggeration to express that he would live a very long time. AT: "I will live a very long time" or "I will live many years" (See: [[rc://en/ta/man/translate/figs-hyperbole]] and [[rc://en/ta/man/translate/figs-simile]])