1 Corinthians 11:19
For there must of necessity be differences of opinion among you, in order that it may be plainly seen who are the men of sterling worth among you.
Matthew 24:24
For there will rise up false Christs and false prophets, displaying wonderful signs and prodigies, so as to deceive, were it possible, even God's own People.
Acts 17:11
The Jews at Beroea were of a nobler disposition than those in Thessalonica, for they very readily received the Message, and day after day searched the Scriptures to see whether it was as Paul stated.
2 Corinthians 8:8
I am not saying this by way of command, but to test by the standard of other men's earnestness the genuineness of your love also.
Ephesians 4:14
So we shall no longer be babes nor shall we resemble mariners tossed on the waves and carried about with every changing wind of doctrine according to men's cleverness and unscrupulous cunning, making use of every shifting device to mislead.
2 Thessalonians 2:11
And for this reason God sends them a misleading influence that they may believe the lie;
1 John 2:19
They have gone forth from our midst, but they did not really belong to us; for had they belonged to us, they would have remained with us. But they left us that it might be manifest that professed believers do not all belong to us.
1 John 4:1
Dear friends, do not believe every spirit, but put the spirits to the test to see whether they are from God; for many false teachers have gone out into the world.
1 John 4:4
As for you, dear children, you are God's children, and have successfully resisted them; for greater is He who is in you than he who is in the world.
Revelation 13:14
And his power of leading astray the inhabitants of the earth is due to the marvels which he has been permitted to work in the presence of the Wild Beast. And he told the inhabitants of the earth to erect a statue to the Wild Beast who had received the sword-stroke and yet had recovered.