[Psa 10:7 KJV] 7 His mouth is full of cursing and deceit and fraud: under his tongue [is] mischief and vanity.
[Psa 12:3-4 KJV] 3 The LORD shall cut off all flattering lips, [and] the tongue that speaketh proud things: 4 Who have said, With our tongue will we prevail; our lips [are] our own: who [is] lord over us?
[Psa 15:1-3 KJV] 1 [[A Psalm of David.]] LORD, who shall abide in thy tabernacle? who shall dwell in thy holy hill? 2 He that walketh uprightly, and worketh righteousness, and speaketh the truth in his heart. 3 [He that] backbiteth not with his tongue, nor doeth evil to his neighbour, nor taketh up a reproach against his neighbour.
[Psa 37:30 KJV] 30 The mouth of the righteous speaketh wisdom, and his tongue talketh of judgment.
[Psa 141:3 KJV] 3 Set a watch, O LORD, before my mouth; keep the door of my lips.
[Psa 34:13 KJV] 13 Keep thy tongue from evil, and thy lips from speaking guile.
[Job 38:2 KJV] 2 Who [is] this that darkeneth counsel by words without knowledge?
[Job 16:5 KJV] 5 [But] I would strengthen you with my mouth, and the moving of my lips should asswage [your grief].
[Job 27:4 KJV] 4 My lips shall not speak wickedness, nor my tongue utter deceit.
[Pro 10:11, 13, 19-21, 31-32 KJV] 11 The mouth of a righteous [man is] a well of life: but violence covereth the mouth of the wicked. ... 13 In the lips of him that hath understanding wisdom is found: but a rod [is] for the back of him that is void of understanding. ... 19 In the multitude of words there wanteth not sin: but he that refraineth his lips [is] wise. 20 The tongue of the just [is as] choice silver: the heart of the wicked [is] little worth. 21 The lips of the righteous feed many: but fools die for want of wisdom. ... 31 The mouth of the just bringeth forth wisdom: but the froward tongue shall be cut out. 32 The lips of the righteous know what is acceptable: but the mouth of the wicked [speaketh] frowardness.
[Pro 11:12-14 KJV] 12 He that is void of wisdom despiseth his neighbour: but a man of understanding holdeth his peace. 13 A talebearer revealeth secrets: but he that is of a faithful spirit concealeth the matter. 14 Where no counsel [is], the people fall: but in the multitude of counsellors [there is] safety.
[Pro 12:14-23 KJV] 14 A man shall be satisfied with good by the fruit of [his] mouth: and the recompence of a man's hands shall be rendered unto him. 15 The way of a fool [is] right in his own eyes: but he that hearkeneth unto counsel [is] wise. 16 A fool's wrath is presently known: but a prudent [man] covereth shame. 17 [He that] speaketh truth sheweth forth righteousness: but a false witness deceit. 18 There is that speaketh like the piercings of a sword: but the tongue of the wise [is] health. 19 The lip of truth shall be established for ever: but a lying tongue [is] but for a moment. 20 Deceit [is] in the heart of them that imagine evil: but to the counsellors of peace [is] joy. 21 There shall no evil happen to the just: but the wicked shall be filled with mischief. 22 Lying lips [are] abomination to the LORD: but they that deal truly [are] his delight. 23 A prudent man concealeth knowledge: but the heart of fools proclaimeth foolishness.
[Pro 13:2-3 KJV] 2 A man shall eat good by the fruit of [his] mouth: but the soul of the transgressors [shall eat] violence. 3 He that keepeth his mouth keepeth his life: [but] he that openeth wide his lips shall have destruction.
[Pro 14:3 KJV] 3 In the mouth of the foolish [is] a rod of pride: but the lips of the wise shall preserve them.
[Pro 15:1-2, 4, 7, 14, 23, 26, 28 KJV] 1 A soft answer turneth away wrath: but grievous words stir up anger. 2 The tongue of the wise useth knowledge aright: but the mouth of fools poureth out foolishness. ... 4 A wholesome tongue [is] a tree of life: but perverseness therein [is] a breach in the spirit. ... 7 The lips of the wise disperse knowledge: but the heart of the foolish [doeth] not so. ... 14 The heart of him that hath understanding seeketh knowledge: but the mouth of fools feedeth on foolishness. ... 23 A man hath joy by the answer of his mouth: and a word [spoken] in due season, how good [is it]! ... 26 The thoughts of the wicked [are] an abomination to the LORD: but [the words] of the pure [are] pleasant words. ... 28 The heart of the righteous studieth to answer: but the mouth of the wicked poureth out evil things.
[Pro 16:21-24 KJV] 21 The wise in heart shall be called prudent: and the sweetness of the lips increaseth learning. 22 Understanding [is] a wellspring of life unto him that hath it: but the instruction of fools [is] folly. 23 The heart of the wise teacheth his mouth, and addeth learning to his lips. 24 Pleasant words [are as] an honeycomb, sweet to the soul, and health to the bones.
[Pro 17:7, 27-28 KJV] 7 Excellent speech becometh not a fool: much less do lying lips a prince. ... 27 He that hath knowledge spareth his words: [and] a man of understanding is of an excellent spirit. 28 Even a fool, when he holdeth his peace, is counted wise: [and] he that shutteth his lips [is esteemed] a man of understanding.
[Pro 18:6-7, 13 KJV] 6 A fool's lips enter into contention, and his mouth calleth for strokes. 7 A fool's mouth [is] his destruction, and his lips [are] the snare of his soul. ... 13 He that answereth a matter before he heareth [it], it [is] folly and shame unto him.
[Pro 29:11, 20 KJV] 11 A fool uttereth all his mind: but a wise [man] keepeth it in till afterwards. ... 20 Seest thou a man [that is] hasty in his words? [there is] more hope of a fool than of him.
[Ecc 5:3, 7 KJV] 3 For a dream cometh through the multitude of business; and a fool's voice [is known] by multitude of words. ... 7 For in the multitude of dreams and many words [there are] also [divers] vanities: but fear thou God.
[Amo 5:13 KJV] 13 Therefore the prudent shall keep silence in that time; for it [is] an evil time.
[Zec 8:16 KJV] 16 These [are] the things that ye shall do; Speak ye every man the truth to his neighbour; execute the judgment of truth and peace in your gates:
[Mat 12:37 KJV] 37 For by thy words thou shalt be justified, and by thy words thou shalt be condemned.
[Luk 6:45 KJV] 45 A good man out of the good treasure of his heart bringeth forth that which is good; and an evil man out of the evil treasure of his heart bringeth forth that which is evil: for of the abundance of the heart his mouth speaketh.
[Eph 4:22, 25, 29 KJV] 22 That ye put off concerning the former conversation the old man, which is corrupt according to the deceitful lusts; ... 25 Wherefore putting away lying, speak every man truth with his neighbour: for we are members one of another. ... 29 Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers.
[Col 4:6 KJV] 6 Let your speech [be] alway with grace, seasoned with salt, that ye may know how ye ought to answer every man.
[Jas 1:19, 26 KJV] 19 Wherefore, my beloved brethren, let every man be swift to hear, slow to speak, slow to wrath: ... 26 If any man among you seem to be religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion [is] vain.
[Jas 3:2, 13 KJV] 2 For in many things we offend all. If any man offend not in word, the same [is] a perfect man, [and] able also to bridle the whole body. ... 13 Who [is] a wise man and endued with knowledge among you? let him shew out of a good conversation his works with meekness of wisdom.
[Rev 14:5 KJV] 5 And in their mouth was found no guile: for they are without fault before the throne of God.