Matthew 12:48-50
He answered the person who told Him, "[Just] who is my mother? And who are my brothers?"
2 Corinthians 5:16
So, from now on we will not regard any person by worldly standards, even though we [once] regarded Christ that way. But we will not regard Him [that way] anymore. [Note: Paul seems to be saying that before his conversion he viewed Christ on the basis of His family, His education, His position, etc., but since his conversion he does not view Him that way anymore].
Galatians 2:4
For [certain] false brothers, who were secretly brought in to observe us practicing our liberty in Christ Jesus [i.e., by not having Titus circumcised], attempted to place us [back] under the bondage [of Mosaic law keeping].
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.
Colossians 2:4
I say this so that no one will deceive you with persuasive arguments.
2 Peter 2:1
But just as there were false prophets among the people before, there will also be false teachers among you [Christians]. They will privately teach harmful doctrines that destroy people [spiritually], by even denying [that Jesus is] the Master, [and thereby] destroying themselves quickly.
1 John 2:26-27
I have written these things to you people concerning those who are trying to lead you astray [from the truth].
Revelation 12:9
Then the great dragon was thrown out [of heaven]; he is the snake from ancient times who is [also] called "the Devil," and "Satan," the deceiver of the entire world. He was thrown down to earth along with his angels.
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].
Revelation 20:3
He threw him into the pit, and closed it and sealed it over him, to keep him from deceiving the nations anymore until the thousand years were ended. After that time, he must be released for a short while.