Proverbs 15:2-4

The tongue of the wise useth knowledge aright Expressing what he knows prudently and gracefully; taking due care both what, and when, and to whom, and in what manner he speaks; but the mouth of fools poureth out foolishness Plentifully, continually, promiscuously, and vehemently, as a fountain doth waters, as the word יביע signifies. A wholesome tongue Which utters sound and useful counsels; is a tree of life Is very useful to preserve the present life, and to promote the spiritual and eternal life, both of the speaker and the hearers; but perverseness therein False or corrupt speeches; is a breach in the spirit Disturbs and wounds the spirit both of the speaker and hearers.