They have spoken vain things, every one to his neighbour: with deceitful lips, and with a double heart have they spoken.

They

Psalm 10:7 His mouth is full of cursing, and of bitterness, and of deceit: under his tongue are labor and sorrow.

Psalm 36:3,4 The words of his mouth are iniquity and guile: he would not understand that he might do well. . . .

Psalm 38:12 And they that sought my soul used violence. And they that sought evils to me spoke vain things, and studied deceits all the day long.

Psalm 41:6 And if he came in to see me, he spoke vain things: his heart gathered together iniquity to itself. He went out and spoke to the same purpose.

Psalm 52:1-4 Unto the end, understanding for David, [2] When Doeg the Edomite came and told Saul: David went to the house of Achimelech. [3] Why dost thou glory in malice, thou that art mighty in iniquity? . . .

Psalm 59:12 For the sin of their mouth, and the word of their lips: and let them be taken in their pride. And for their cursing and lying they shall be talked of,

Psalm 144:8,11 Whose mouth hath spoken vanity: and their right hand is the right hand of iniquity. . . .

Jeremiah 9:2-6,8 Who will give me in the wilderness a lodging place of wayfaring men, and I will leave my people, and depart from them? because they are all adulterers, an assembly of transgressors. . . .

flattering

Psalm 5:9 For there is no truth in their mouth: their heart is vain.

Psalm 28:3 Draw me not away together with the wicked; and with the workers of iniquity destroy me not: Who speak peace with their neighbour, but evils are in their hearts.

Psalm 62:4 But they have thought to cast away my price; I ran in thirst: they blessed with their mouth, but cursed with their heart.

Proverbs 20:19 Meddle not with him that revealeth secrets, and walketh deceitfully, and openeth wide his lips.

Proverbs 29:5 A man that speaketh to his friend with flattering and dissembling words, spreadeth a net for his feet.

Ezekiel 12:24 For there shall be no more any vain visions, nor doubtful divination in the midst of the children of Israel.

Romans 16:18 For they that are such serve not Christ our Lord but their own belly: and by pleasing speeches and good words seduce the hearts of the innocent.

1 Thessalonians 2:5 For neither have we used at any time the speech of flattery, as you know: nor taken an occasion of covetousness (God is witness):

a double heart.

1 Chronicles 12:33 And of Zabulon such as went forth to battle, and stood in array well appointed with armour for war, there came fifty thousand to his aid, with no double heart.

James 1:8 A double minded man is inconstant in all his ways.