Exodus 20:16
You shall not bear false witness against your neighbor.

Deuteronomy 19:16-19
If a false witness testifies against someone, accusing him of a crime, / both parties to the dispute must stand in the presence of the LORD, before the priests and judges who are in office at that time. / The judges shall investigate thoroughly, and if the witness is proven to be a liar who has falsely accused his brother, ...

Psalm 101:7
No one who practices deceit shall dwell in my house; no one who tells lies shall stand in my presence.

Proverbs 6:16-19
There are six things that the LORD hates, seven that are detestable to Him: / haughty eyes, a lying tongue, hands that shed innocent blood, / a heart that devises wicked schemes, feet that run swiftly to evil, ...

Proverbs 12:22
Lying lips are detestable to the LORD, but those who deal faithfully are His delight.

Proverbs 14:5
An honest witness does not deceive, but a dishonest witness pours forth lies.

Proverbs 21:28
A lying witness will perish, but the man who listens to truth will speak forever.

Proverbs 24:28
Do not testify against your neighbor without cause, and do not deceive with your lips.

Isaiah 59:3-4
For your hands are stained with blood, and your fingers with iniquity; your lips have spoken lies, and your tongue mutters injustice. / No one calls for justice; no one pleads his case honestly. They rely on empty pleas; they tell lies; they conceive mischief and give birth to iniquity.

Jeremiah 9:3-6
“They bend their tongues like bows; lies prevail over truth in the land. For they proceed from evil to evil, and they do not take Me into account,” declares the LORD. / “Let everyone guard against his neighbor; do not trust any brother, for every brother deals craftily, and every friend spreads slander. / Each one betrays his friend; no one tells the truth. They have taught their tongues to lie; they wear themselves out committing iniquity. ...

Matthew 12:36-37
But I tell you that men will give an account on the day of judgment for every careless word they have spoken. / For by your words you will be acquitted, and by your words you will be condemned.”

Matthew 15:18-20
But the things that come out of the mouth come from the heart, and these things defile a man. / For out of the heart come evil thoughts, murder, adultery, sexual immorality, theft, false testimony, and slander. / These are what defile a man, but eating with unwashed hands does not defile him.”

Mark 7:21-23
For from within the hearts of men come evil thoughts, sexual immorality, theft, murder, adultery, / greed, wickedness, deceit, debauchery, envy, slander, arrogance, and foolishness. / All these evils come from within, and these are what defile a man.”

John 8:44
You belong to your father, the devil, and you want to carry out his desires. He was a murderer from the beginning, refusing to uphold the truth, because there is no truth in him. When he lies, he speaks his native language, because he is a liar and the father of lies.

Acts 5:3-4
Then Peter said, “Ananias, how is it that Satan has filled your heart to lie to the Holy Spirit and withhold some of the proceeds from the land? / Did it not belong to you before it was sold? And after it was sold, was it not at your disposal? How could you conceive such a deed in your heart? You have not lied to men, but to God!”