Jude 1:15

to execute judgment upon all men, and to convict all godless people of all their godless acts, which in their ungodliness they have committed, and of all the harsh words which they have spoken against him, godless sinners that they are!'

Matthew 10:25

It is enough for a scholar to be treated like his teacher, and a servant like his master. If the head of the house has been called Baal-zebub, how much more the members of his household!

Matthew 12:24

But the Pharisees heard of it and said: "He drives out demons only by the help of Baal-zebub the chief of the demons."

John 8:44

As for you, you are children of your Father the Devil, and you are determined to do what your father loves to do. He was a murderer from the first, and did not stand by the truth, because there is no truth in him. Whenever he lies, he does what is natural to him; because he is a liar, and the father of lying.

John 8:48

"Are not we right, after all," replied the Jews, "in saying that you are a Samaritan, and are possessed by a demon?"

Acts 25:7

On Paul's appearance, the Jews who had come down from Jerusalem surrounded him, and made many serious charges, which they failed to establish.

Revelation 21:8

But as for cowards, unbelievers, the degraded, murderers, the impure, sorcerers, idolaters, and all liars--their place will be in the burning lake of fire and sulphur. That is the Second Death.'

Revelation 22:15

Outside will be the filthy, the sorcerers, the impure, the murderers, the idolaters, and all who love the false and live it.'

Treasury of Scripture Knowledge

Summary

Let the lying lips be put to silence; which speak grievous things proudly and contemptuously against the righteous.

Grievous things

Bible References

The lying

John 8:44
As for you, you are children of your Father the Devil, and you are determined to do what your father loves to do. He was a murderer from the first, and did not stand by the truth, because there is no truth in him. Whenever he lies, he does what is natural to him; because he is a liar, and the father of lying.
Revelation 21:8
But as for cowards, unbelievers, the degraded, murderers, the impure, sorcerers, idolaters, and all liars--their place will be in the burning lake of fire and sulphur. That is the Second Death.'
Revelation 22:15
Outside will be the filthy, the sorcerers, the impure, the murderers, the idolaters, and all who love the false and live it.'

Speak

Matthew 10:25
It is enough for a scholar to be treated like his teacher, and a servant like his master. If the head of the house has been called Baal-zebub, how much more the members of his household!
Matthew 12:24
But the Pharisees heard of it and said: "He drives out demons only by the help of Baal-zebub the chief of the demons."
John 8:48
"Are not we right, after all," replied the Jews, "in saying that you are a Samaritan, and are possessed by a demon?"
Acts 25:7
On Paul's appearance, the Jews who had come down from Jerusalem surrounded him, and made many serious charges, which they failed to establish.

Grievous things

Jude 1:15
to execute judgment upon all men, and to convict all godless people of all their godless acts, which in their ungodliness they have committed, and of all the harsh words which they have spoken against him, godless sinners that they are!'