Cross reference
Psalms 50:19
19 "You give your mouth to evil. You harnesses your tongue for deceit.
Psalms 10:7
7 His mouth is full of cursing, deceit, and oppression. Under his tongue is mischief and iniquity.
Revelation 21:8
8 But for the cowardly, unbelieving, sinners, abominable, murderers, sexually immoral, sorcerers,{The word for "sorcerers" here also includes users of potions and drugs.} idolaters, and all liars, their part is in the lake that burns with fire and sulfur, which is the second death."
James 3:5-9
5 So the tongue is also a little member, and boasts great things. See how a small fire can spread to a large forest!
6 And the tongue is a fire. The world of iniquity among our members is the tongue, which defiles the whole body, and sets on fire the course of nature, and is set on fire by Gehenna.{Gehenna is a name that describes a burning Hell with rotting bodies and unclean things in it}
7 For every kind of animal, bird, creeping thing, and thing in the sea, is tamed, and has been tamed by mankind.
8 But nobody can tame the tongue. It is a restless evil, full of deadly poison.
9 With it we bless our God and Father, and with it we curse men, who are made in the image of God.
Romans 3:13-14
13 "Their throat is an open tomb. With their tongues they have used deceit." "The poison of vipers is under their lips;"
14 "Whose mouth is full of cursing and bitterness."
Hosea 4:2
2 There is cursing, lying, murder, stealing, and committing adultery; They break boundaries, and bloodshed causes bloodshed.
Jeremiah 9:5
5 They will deceive everyone his neighbor, and will not speak the truth: they have taught their tongue to speak lies; they weary themselves to commit iniquity.
Isaiah 59:3-4
3 For your hands are defiled with blood, and your fingers with iniquity; your lips have spoken lies, your tongue mutters wickedness.
4 None sues in righteousness, and none pleads in truth: they trust in vanity, and speak lies; they conceive mischief, and bring forth iniquity.
Psalms 64:3-5
3 Who sharpen their tongue like a sword, And aim their arrows, deadly words,
4 To shoot innocent men from ambushes. They shoot at him suddenly and fearlessly.
5 They encourage themselves in evil plans. They talk about laying snares secretly. They say, "Who will see them?"
Psalms 55:21
21 His mouth was smooth as butter, But his heart was war. His words were softer than oil, Yet they were drawn swords.
Psalms 55:12
12 For it was not an enemy who insulted me, Then I could have endured it. Neither was it he who hated me who raised himself up against me, Then I would have hid myself from him.
Psalms 52:2-4
2 Your tongue plots destruction, Like a sharp razor, working deceitfully.
3 You love evil more than good, Lying rather than speaking the truth. Selah.
4 You love all devouring words, You deceitful tongue.
Psalms 36:3-4
3 The words of his mouth are iniquity and deceit. He has ceased to be wise and to do good.
4 He plots iniquity on his bed. He sets himself in a way that is not good; He doesn't abhor evil.
Psalms 12:2-3
2 Everyone lies to his neighbor. They speak with flattering lips, and with a double heart.
3 May Yahweh cut off all flattering lips, And the tongue that boasts,
Psalms 5:9
9 For there is no faithfulness in their mouth. Their heart is destruction. Their throat is an open tomb. They flatter with their tongue.