Matthew 7:15

Take heed then of false prophets, who come to you in the garb of sheep, but inwardly they are ravening wolves.

2 Peter 2:12

But these men, as the naturally irrational brute beasts, made to be taken and destroyed, speaking evil of the things of which they are ignorant, will perish by their own corruption;

Revelation 19:20

And the beast was seized upon, and with him the false prophet who performed the wonders before him, by which he deceived those who received the brand of the beast, and those who worshipped his image. They were both hurled alive into the lake of fire which burneth with brimstone.

Treasury of Scripture Knowledge

Summary

But the prophet, which shall presume to speak a word in my name, which I have not commanded him to speak, or that shall speak in the name of other gods, even that prophet shall die.

In the name

Bible References

The prophet

Matthew 7:15
Take heed then of false prophets, who come to you in the garb of sheep, but inwardly they are ravening wolves.
2 Peter 2:12
But these men, as the naturally irrational brute beasts, made to be taken and destroyed, speaking evil of the things of which they are ignorant, will perish by their own corruption;

In the name

Revelation 19:20
And the beast was seized upon, and with him the false prophet who performed the wonders before him, by which he deceived those who received the brand of the beast, and those who worshipped his image. They were both hurled alive into the lake of fire which burneth with brimstone.