“To get wisdom is to love oneself.
To keep understanding is to prosper.
A false witness will not go unpunished.
The liar will perish.”
You love yourself if you seek wisdom. This wisdom will lead to understanding and prosperity. Then in case you forgot about the consequences for lying and bearing false witness that admonition is repeated here, a few verses after the earlier indication. Liars will not go unpunished. In fact, they will perish.
Eugene Finnegan Bible Project 