Matthew 13:15

for the heart of this people was made gross, and with their ears they heard heavily, and their eyes they closed; lest they should see with their eyes, and hear with their ears, and understand with their heart, and turn, and I should heal them.'

Acts 28:27

for the heart of this people was made gross; and with their ears they heard heavily; and their eyes they closed; lest at any time they should see with their eyes, and hear with their ears, and understand with their heart, and should turn, and I should heal them.'

2 Peter 2:18

For, uttering great swelling words of vanity, they entice, in desires of the flesh, by their lasciviousness, those just escaping from those who live in error;

Revelation 13:5-6

And there was given to him a mouth speaking great things and blasphemies; and authority was given him to work forty-two months.

Treasury of Scripture Knowledge

Summary

They are inclosed in their own fat: with their mouth they speak proudly.

Bible References

They are

Matthew 13:15
for the heart of this people was made gross, and with their ears they heard heavily, and their eyes they closed; lest they should see with their eyes, and hear with their ears, and understand with their heart, and turn, and I should heal them.'
Acts 28:27
for the heart of this people was made gross; and with their ears they heard heavily; and their eyes they closed; lest at any time they should see with their eyes, and hear with their ears, and understand with their heart, and should turn, and I should heal them.'

With

2 Peter 2:18
For, uttering great swelling words of vanity, they entice, in desires of the flesh, by their lasciviousness, those just escaping from those who live in error;
Revelation 13:5
And there was given to him a mouth speaking great things and blasphemies; and authority was given him to work forty-two months.