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 5:20-23
Woe to those who call evil good and good evil, who turn darkness to light and light to darkness, who replace bitter with sweet and sweet with bitter. / Woe to those who are wise in their own eyes and clever in their own sight. / Woe to those who are heroes in drinking wine and champions in mixing strong drink, ...

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. ...

Zechariah 8:16-17
These are the things you must do: Speak truth to one another, render true and sound judgments in your gates, / do not plot evil in your hearts against your neighbor, and do not love to swear falsely, for I hate all these things,” declares the LORD.

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.”

Matthew 26:59-60
Now the chief priests and the whole Sanhedrin were seeking false testimony against Jesus in order to put Him to death. / But they did not find any, though many false witnesses came forward. Finally two came forward

Mark 14:56-59
For many bore false witness against Jesus, but their testimony was inconsistent. / Then some men stood up and testified falsely against Him: / “We heard Him say, ‘I will destroy this man-made temple, and in three days I will build another that is made without hands.’” ...