Psalms 41:6And if he come to see me, he speaketh vanity: his heart gathereth iniquity to itself; when he goeth abroad, he telleth it.
Romans 16:18For they that are such serve not our Lord Jesus Christ, but their own belly; and by good words and fair speeches deceive the hearts of the simple.
Psalms 10:7His mouth is full of cursing and deceit and fraud: under his tongue is mischief and vanity.
Jeremiah 9:8Their tongue is as an arrow shot out; it speaketh deceit: one speaketh peaceably to his neighbour with his mouth, but in heart he layeth his wait.
1 Chronicles 12:33Of Zebulun, such as went forth to battle, expert in war, with all instruments of war, fifty thousand, which could keep rank: they were not of double heart.
Psalms 5:9For there is no faithfulness in their mouth; their inward part is very wickedness; their throat is an open sepulchre; they flatter with their tongue.
Psalms 28:3Draw me not away with the wicked, and with the workers of iniquity, which speak peace to their neighbours, but mischief is in their hearts.
James 1:8A double minded man is unstable in all his ways.
Psalms 36:3-4The words of his mouth are iniquity and deceit: he hath left off to be wise, and to do good. He deviseth mischief upon his bed; he setteth himself in a way that is not good; he abhorreth not evil.
Psalms 38:12They also that seek after my life lay snares for me: and they that seek my hurt speak mischievous things, and imagine deceits all the day long.
Psalms 52:1-4Why boastest thou thyself in mischief, O mighty man? the goodness of God endureth continually. Thy tongue deviseth mischiefs; like a sharp razor, working deceitfully. Thou lovest evil more than good; and lying rather than to speak righteousness. Selah. Thou lovest all devouring words, O thou deceitful tongue.
Psalms 55:21The words of his mouth were smoother than butter, but war was in his heart: his words were softer than oil, yet were they drawn swords.
Psalms 59:12For the sin of their mouth and the words of their lips let them even be taken in their pride: and for cursing and lying which they speak.
Psalms 62:4They only consult to cast him down from his excellency: they delight in lies: they bless with their mouth, but they curse inwardly. Selah.
Proverbs 20:19He that goeth about as a talebearer revealeth secrets: therefore meddle not with him that flattereth with his lips.
Proverbs 29:5A man that flattereth his neighbour spreadeth a net for his feet.
Jeremiah 9:2-6Oh that I had in the wilderness a lodging place of wayfaring men; that I might leave my people, and go from them! for they be all adulterers, an assembly of treacherous men. And they bend their tongues like their bow for lies: but they are not valiant for the truth upon the earth; for they proceed from evil to evil, and they know not me, saith the LORD. Take ye heed every one of his neighbour, and trust ye not in any brother: for every brother will utterly supplant, and every neighbour will walk with slanders. And they will deceive every one his neighbour, and will not speak the truth: they have taught their tongue to speak lies, and weary themselves to commit iniquity. Thine habitation is in the midst of deceit; through deceit they refuse to know me, saith the LORD.
Ezekiel 12:24For there shall be no more any vain vision nor flattering divination within the house of Israel.
1 Thessalonians 2:5For neither at any time used we flattering words, as ye know, nor a cloke of covetousness; God is witness: