Proverbs 15:7

7. Disperse (or diffuse) knowledge Communicate to others for their good the knowledge which they possess.

The… foolish doeth not so Has no useful knowledge to impart. This is not a contradiction of Proverbs 14:33. That is an implied censure of an ostentatious display of knowledge; this a commendation of the benevolent diffusion of it. It should be observed, however, that the verb יזרו , ( yezaru,) rendered “disperse,” also signifies to winnow, as in separating the chaff from the wheat; also, to search out, to investigate, so distinguishing between that which is valuable and that which is worthless. This meaning of the verb is preferred by some, and gives a very good sense. The lips of the wise winnow their knowledge, that is, their instructive utterances, carefully distinguishing what is useful for edification and imparting only what is valuable; but the heart of fools does not so; they do not distinguish, but give chaff and wheat together. Some render: “The heart of fools is not right.” Others: “Not stable.” Stuart: “What is not sound.” Noyes refers to the same expression in 2 Kings 17:9; Isaiah 16:6; Jeremiah 23:10, where it is supposed to have this meaning. The ancient versions are divided. The Chaldee and Vulgate agree with our Authorized Version. The Septuagint, however, has: “The lips of the wise are bound by discretion.”