1 Corinthians 11:19
For there must be heresies also among you, that the approved among you may be manifest).
Matthew 24:24
For false Christs and false prophets shall arise and shew great signs and wonders, so that they would deceive (if it were possible) even the elect.
Acts 17:11
These were more ingenuous than those of Thessalonica, receiving the word with all readiness of mind, and daily searching the scriptures, whether those things were so?
2 Corinthians 8:8
I speak not by way of command, but that by the diligence of others, I may prove the sincerity of your love.
Ephesians 4:14
That we may be no longer children, fluctuating to and fro, and carried about with every wind of doctrine, by the slight of men, by cunning craftiness, whereby they lie in wait to deceive:
2 Thessalonians 2:11
And therefore God shall send them strong delusion, so that that they shall believe a lie,
1 John 2:19
They went out from us, but they were not of us: for if they had been of us, they would have continued with us: but they went out, that they might be made manifest, that they were not all of us.
1 John 4:1
Beloved, believe not every spirit, but try the spirits, whether they are of God, because many false prophets are gone out into the world.
1 John 4:4
Ye are of God, beloved children, and have overcome them; because greater is he that is in you, than he that is in the world.
Revelation 13:14
And he deceiveth them that dwell on the earth by the wonders which it is given him to do before the wild beast: saying to them that dwell on the earth, to make an image to the wild beast, which had the wound by the sword, and yet lived.