Acts 7:54

As they listened to this, the Council grew frantic with rage, and gnashed their teeth at Stephen.

Acts 5:33

The members of the Council became frantic with rage on hearing this, and were for putting the Apostles to death.

Matthew 8:12

While the heirs to the Kingdom will be 'banished into the darkness' outside; there, there will be weeping and grinding of teeth."

Matthew 13:42

And 'will throw them into the fiery furnace,' where there will be weeping and grinding of teeth.

Matthew 13:50

And 'will throw them into the fiery furnace,' where there will be weeping and grinding of teeth.

Matthew 22:13

Then the king said to the attendants 'Tie him hand and foot, and 'put him out into the darkness' outside, where there will be weeping and grinding of teeth.'

Matthew 24:51

And will flog him severely, and assign him his place among the hypocrites, where there will be weeping and grinding of teeth.

Matthew 25:30

As for the useless servant, 'put him out into the darkness' outside, where there will be weeping and grinding of teeth.'

Luke 13:28

There, there will be weeping and grinding of teeth, when you see Abraham, Isaac, and Jacob, and all the Prophets, in the Kingdom of God, while you yourselves are being driven outside.

Acts 22:22-23

Up to this point the people had been listening to Paul, but at these words they called out: "Kill him! A fellow like this ought not to have been allowed to live!"

Treasury of Scripture Knowledge

Summary

When they heard these things, they were cut to the heart, and they gnashed on him with their teeth.

They were

Bible References

They were

Acts 5:33
The members of the Council became frantic with rage on hearing this, and were for putting the Apostles to death.
Acts 22:22
Up to this point the people had been listening to Paul, but at these words they called out: "Kill him! A fellow like this ought not to have been allowed to live!"

They gnashed

Matthew 8:12
While the heirs to the Kingdom will be 'banished into the darkness' outside; there, there will be weeping and grinding of teeth."
Matthew 13:42
And 'will throw them into the fiery furnace,' where there will be weeping and grinding of teeth.
Matthew 22:13
Then the king said to the attendants 'Tie him hand and foot, and 'put him out into the darkness' outside, where there will be weeping and grinding of teeth.'
Matthew 24:51
And will flog him severely, and assign him his place among the hypocrites, where there will be weeping and grinding of teeth.
Matthew 25:30
As for the useless servant, 'put him out into the darkness' outside, where there will be weeping and grinding of teeth.'
Luke 13:28
There, there will be weeping and grinding of teeth, when you see Abraham, Isaac, and Jacob, and all the Prophets, in the Kingdom of God, while you yourselves are being driven outside.

General references

John 16:9
As to Sin, for men do not believe in me;
Acts 21:36
For the people were following in a mass, shouting out: "Kill him!"
1 Corinthians 1:27
But God chose what the world counts foolish to put its wise men to shame, and God chose what the world counts weak to put its strong things to shame,