Psalm 55:21
The words of his mouth were smoother than butter, but war was in his heart; his words were softer than oil, but they were sharp swords.
Psalm 28:3
Do not take me away with the sinners and the workers of evil, who say words of peace to their neighbours, but evil is in their hearts.
Psalm 57:4
My soul is among lions; I am stretched out among those who are on fire, even the sons of men, whose teeth are spears and arrows, and whose tongue is a sharp sword.
Proverbs 5:3-4
For honey is dropping from the lips of the strange woman, and her mouth is smoother than oil;
Psalm 12:2
Everyone says false words to his neighbour: their tongues are smooth in their talk, and their hearts are full of deceit.
Psalm 59:7
See, hate is dropping from their lips; curses are on their tongues: they say, Who gives attention to it?
Psalm 62:4
Their only thought is to put him down from his place of honour; their delight is in deceit: blessing is in their mouths but cursing in their hearts. (Selah.)
Psalm 64:3
Who make their tongues sharp like a sword, and whose arrows are pointed, even bitter words;
Proverbs 12:18
There are some whose uncontrolled talk is like the wounds of a sword, but the tongue of the wise makes one well again.
Proverbs 26:24-26
With his lips the hater makes things seem what they are not, but deceit is stored up inside him;
Proverbs 26:28
A false tongue has hate for those who have clean hearts, and a smooth mouth is a cause of falling.
Matthew 26:25
And Judas, who was false to him, made answer and said, Is it I, Master? He says to him, Yes.
Luke 20:20-21
And they kept watch on him, and sent out secret representatives, who were acting the part of good men, in order that they might get something from his words, on account of which they might give him up to the government and into the power of the ruler.
John 13:2
So while a meal was going on, the Evil One having now put it into the heart of Judas Iscariot, Simon's son, to be false to him,