Exodus 20:7
You shall not take the name of the LORD your God in vain, for the LORD will not leave anyone unpunished who takes His name in vain.

Leviticus 24:16
Whoever blasphemes the name of the LORD must surely be put to death; the whole assembly must surely stone him, whether he is a foreign resident or native; if he blasphemes the Name, he must be put to death.

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.”

Romans 1:30
slanderers, God-haters, insolent, arrogant, and boastful. They invent new forms of evil; they disobey their parents.

James 3:9-10
With the tongue we bless our Lord and Father, and with it we curse men, who have been made in God’s likeness. / Out of the same mouth come blessing and cursing. My brothers, this should not be!

Isaiah 52:5
And now what have I here? declares the LORD. For My people have been taken without cause; those who rule them taunt, declares the LORD, and My name is blasphemed continually all day long.

Ezekiel 36:20-23
And wherever they went among the nations, they profaned My holy name, because it was said of them, ‘These are the people of the LORD, yet they had to leave His land.’ / But I had concern for My holy name, which the house of Israel had profaned among the nations to which they had gone. / Therefore tell the house of Israel that this is what the Lord GOD says: It is not for your sake that I will act, O house of Israel, but for My holy name, which you profaned among the nations to which you went. ...

2 Timothy 3:2-5
For men will be lovers of themselves, lovers of money, boastful, arrogant, abusive, disobedient to their parents, ungrateful, unholy, / unloving, unforgiving, slanderous, without self-control, brutal, without love of good, / traitorous, reckless, conceited, lovers of pleasure rather than lovers of God, ...

1 Timothy 1:13
I was formerly a blasphemer, a persecutor, and a violent man; yet because I had acted in ignorance and unbelief, I was shown mercy.

Jeremiah 23:36
But refer no more to the burden of the LORD, for each man’s word becomes the burden, so that you pervert the words of the living God, the LORD of Hosts, our God.

2 Peter 2:12
These men are like irrational animals, creatures of instinct, born to be captured and destroyed. They blaspheme in matters they do not understand, and like such creatures, they too will be destroyed.

Jude 1:15
to execute judgment on everyone, and to convict all the ungodly of every ungodly act of wickedness and every harsh word spoken against Him by ungodly sinners.”

Revelation 13:6
And the beast opened its mouth to speak blasphemies against God and to slander His name and His tabernacle—those who dwell in heaven.

1 Samuel 17:45
But David said to the Philistine, “You come against me with sword and spear and javelin, but I come against you in the name of the LORD of Hosts, the God of the armies of Israel, whom you have defied.

Nehemiah 9:26
But they were disobedient and rebelled against You; they flung Your law behind their backs. They killed Your prophets, who had admonished them to return to You. They committed terrible blasphemies.