Luke 6.43-45

43 “For a good tree bringeth not forth corrupt fruit; neither doth a corrupt tree bring forth good fruit.

44 For every tree is known by his own fruit. For of thorns men do not gather figs, nor of a bramble bush gather they grapes.

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.“

Proverbs 8.13

“The fear of the LORD is to hate evil: pride, and arrogancy, and the evil way, and the froward mouth, do I hate.”

Proverbs 26.25

“When he speaketh fair, believe him not: for there are seven abominations in his heart.”

Proverbs 20.19

“He that goeth about as a talebearer revealeth secrets: therefore meddle not with him that flattereth with his lips.”

Psalm 12.2-3

2 “They speak vanity every one with his neighbour: with flattering lips and with a double heart do they speak.

3 The LORD shall cut off all flattering lips, and the tongue that speaketh proud things:“

Proverbs 14.16

“A wise man feareth, and departeth from evil: but the fool rageth, and is confident.”

Ecclesiastes 7.9

“Be not hasty in thy spirit to be angry: for anger resteth in the bosom of fools.”

John 8.44

“Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.”