This verse uses the same pair of Hebrew terms that framed the previous chapter at 11:1 and 11:20.
Quick answer
The strongest language the book has, aimed at ordinary dishonesty. And the matching half is warmer than most readers expect.
Read both lines
The two terms here are identical in Hebrew to the pair at 11:1, where they were applied to rigged scales, and at 11:20, where they were applied to a crooked heart. Three uses, three subjects: the merchant's bag, the interior, and now the mouth. Together they say the same thing is being tracked in each place. The second line is the half worth sitting with. It does not say God tolerates honest people; it says they are His delight, which is affection rather than approval, and it is aimed at the unremarkable business of telling the truth when a lie would be easier.
Related: Proverbs 11:1 · Proverbs 11:20 · Proverbs 6:16–19
New King James Version®, Copyright © 1982, Thomas Nelson. All rights reserved. Full copyright information. Scripture provided by API.Bible.
Go Deeper
If this verse has been used to put weight on you that it was never carrying, ask about it directly.