1 Corinthians 11:19
for there must also be factions among you, that the approved may be made manifest among you.
Matthew 24:24
for there will arise false Christs and false prophets; and they will give great signs and wonders, so as to lead astray, if possible, even the elect.
Acts 17:11
And these were more noble than those in Thessalonica, in that they received the word with all readiness of mind, examining the Scriptures daily, whether these things were so.
2 Corinthians 8:8
I am not speaking by way of command; but as proving, through the diligence of others, the sincerity of your love.
Ephesians 4:14
that we may no longer be babes, billow-tossed, and carried about with every wind of teaching, in the sleight of men, in the craftiness suited to the artifice of error;
2 Thessalonians 2:11
And, for this cause, God sendeth them a working of delusion, that they may believe the lie;
1 John 2:19
They went out from among 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 are 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 have gone forth into the world.
1 John 4:4
Ye are of God, little children, and have overcome them; because greater is He Who is in you, than he that is in the world.
Revelation 13:14
And he deceives those who dwell on the earth by reason of the signs which it was given him to do in the sight of the beast; saying to those dwelling on the earth, that they should make an image to the beast, who has the stroke of the sword, and lived.