1 John 4:1-3

Beloved, do not believe every spirit, but try the spirits, whether they be from God; because many false prophets are gone forth into the world.

Revelation 16:13-14

And I saw, and out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet there came forth three unclean spirits, like frogs:

Treasury of Scripture Knowledge

Summary

To whom hast thou uttered words? and whose spirit came from thee?

Bible References

Whose spirit

1 John 4:1
Beloved, do not believe every spirit, but try the spirits, whether they be from God; because many false prophets are gone forth into the world.
Revelation 16:13
And I saw, and out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet there came forth three unclean spirits, like frogs: