Albert Barnes Commentary Proverbs 22:20

"Have not I written unto thee excellent things Of counsels and knowledge," — Proverbs 22:20 (ASV)

Excellent things - A meaning of the word derived from “the third,” that is, “the chief of three warriors in a chariot” (Exodus 14:7 note). Another reading of the Hebrew text gives “Have I not written to you long ago?” and this would form a natural antithesis to this day (Proverbs 22:19). The rendering of the Septuagint is: “write them for yourself three times;” that of the Vulgate, “I have written it (that is, my counsel) In threefold form;” the “three times” or “threefold form” being referred either to the Proverbs, Ecclesiastes, the Song of Solomon, or to the division of the Old Testament into the Law, the prophets, and the Hagiographa.