The author uses these rhetorical questions to teach that people should not complain when God punishes them. Alternate translation: "A person should not complain when God punishes him for his sins." (See: [[rc://en/ta/man/translate/figs-rquestion]])
Possible meanings are 1) it is implied that mere people cannot fully understand God's actions. Alternate translation: "How can a mere person complain" or 2) it is implied that being alive is a gift from God. Alternate translation: "How can a person who is blessed to be alive complain" (See: [[rc://en/ta/man/translate/figs-explicit]])