A man hath joy by the answer of his mouth. The idea of the preceding verse concerning counsel is maintained. A counsellor gives wise and skilful advice, or makes a timely speech; and, knowing how much harm is done by rash or evil words, he naturally rejoices that he has been able to be useful, and has avoided the errors which the tongue is liable to incur.
A word spoken in due season, sermo opportunus, is advice given at the right moment and in the most suitable manner, when the occasion and the interests at stake demand it (comp. Proverbs 25:11). The LXX.
connects this verse with the preceding, and renders, "The evil man will not hearken to it (counsel), nor will he say aught in season or for the public good."