They are all straightforward to the one who understands, and right to those who find knowledge.
In context
7For my mouth utters truth, and wickedness is an abomination to my lips. 8All the words of my mouth are in righteousness; there is nothing twisted or crooked in them. 9They are all straightforward to the one who understands, and right to those who find knowledge. 10Take my discipline rather than silver, and knowledge rather than choice gold; 11for wisdom is better than corals, and no delight can compare with her.
