RobH_en_tn/neh/09/13.md

you came down

When God talks with his people, he is often described as "coming down" or "coming down from heaven." This is a descriptive way of saying that God appeared to that person. Alternate translation: "you appeared" or "you came down from heaven" (See: rc://en/ta/man/translate/figs-idiom and rc://en/ta/man/translate/figs-explicit)

righteous decrees and true laws, good statutes and commandments

Both of these double phrases describe the same thing, the law of Moses. (See: rc://en/ta/man/translate/figs-parallelism)