Thus saith, &c. The lesson which follows is of universal application.
Let not. Note the Figure of speech Symploke, or Anaphora, for emphasis.
wisdom... might... riches. These are the three things which men boast of, and trust in. This was Jerusalem's sin.
let not. Some codices, with six early printed editions (one in margin), Aramaean, Septuagint, Syriac, and Vulgate, read "neither let".