This refers to people who live in an upright way. Alternate translation: "Upright people" or "People who do what is right" (See: [[rc://en/ta/man/translate/figs-nominaladj]])
This means to not say anything in response. Alternate translation: "has nothing to say against Yahweh in reply" (See: [[rc://en/ta/man/translate/figs-idiom]])