1 Corinthians 11:19
For it is to be expected [i.e., it is inevitable] that there would be dissensions among you, so that those who are approved [by God] can become known among you.
Matthew 24:24
For false Christs and false prophets will appear and they will perform great [miraculous] signs and [supernatural] wonders in order to lead astray even the elect [i.e., God's people], if possible.
Acts 17:11
Now these people [in Berea] had more character than those in Thessalonica because they [not only] received the message with an open mind but [also] examined the [Old Testament] Scriptures every day to see if what they had heard was really true.
2 Corinthians 8:8
I am not saying this [to you] as a command, but by telling you how eager others are [to help], to find out how genuine your love is also.
Ephesians 4:14
Then we will no longer be [spiritual] babies, tossed back and forth [by waves], and blown around by every wind of [false] teaching, [deceived] by the clever trickery of people using deceptive schemes.
2 Thessalonians 2:11
And this is the reason that God sends them a strong delusion [to influence them]: It is so that they would believe the lie,
1 John 2:19
These antichrists left our group [i.e., withdrew their fellowship from us], but they were not [really a part] of us, for if they had been, they would have continued [to participate] with us. But, by their leaving us, it proved that none of them were [really] a part of our group [after all].
1 John 4:1
Loved ones, do not believe [the message of] every spirit [i.e., every person claiming to be a teacher], but test the spirits [i.e., require proof that they and their message are genuine] to see whether they represent God [or not], because many false prophets have begun circulating throughout the world.
1 John 4:4
[But], you people are [followers] of God, little children [i.e., dear ones], and you have overcome them [i.e., these false teachers] because He who is in your lives [i.e., the Holy Spirit, See 3:24] is greater [i.e., more powerful] than he who is in [i.e., dominates] the world [i.e., Satan. See II Cor. 4:4].
Revelation 13:14
[And] by being given [power] to perform these signs in the sight of the [first] beast, he deceived the people on earth. He told them to make a statue to [honor] the [first] beast, who had been wounded by a sword and yet lived [through it].