Acts 20:30

Paul's Farewell To The Ephesian Elders

²⁹ [Because] I know that after I am gone [from here] there will be vicious wolves [i.e., ravaging false teachers] who will come in among you, and they will not spare the flock [i.e., the congregation]. ³⁰ [Indeed, even] from among your own selves [i.e., the body of elders there in Ephesus] some men will arise and, by speaking false things, they will lead away the disciples, [influencing them] to follow them. ³¹ So, be very watchful, and remember that for three years I never stopped warning every one of you [about such matters] both night and day with tears [in my eyes].

Ephesus

1 Timothy 1:19-20

holding on to [your] faith and a good conscience. Some people have rejected these things, resulting in the "shipwreck" of their faith [i.e., their spiritual life was ruined].

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].

Matthew 23:15

"It is too bad for you hypocritical experts in the law of Moses and [you] Pharisees! For you travel over land and sea [in hope of] making one person a proselyte [i.e., a convert to the Jewish religion]. And when you do convert one, you make him twice as deserving of hell as yourselves.

Matthew 26:21-25

As they were eating, He said, "Truly I tell you, one of you will turn me over [to the Jewish leaders]."

Acts 5:36-37

For [remember that] some time ago Theudas appeared, claiming to be someone [important], and that about four hundred people rallied [to his cause], but he was killed and all his men left him and nothing ever came of it.

Acts 11:26

and when he found him, he brought him [back] to Antioch. So, for an entire year Saul and Barnabas gathered the church together and taught many people. [It was] here in Antioch that the disciples were first [divinely] called Christians.

Acts 21:38

Are you not the Egyptian who, awhile back, stirred up a revolt and led four thousand of the 'Dagger Men' out into the wilderness?"

1 Corinthians 1:12-15

Now this is what I mean: Each of you is saying, "I am a follower of Paul," and another "I am a follower of Apollos," and another "I am a follower of Cephas [i.e., Peter]," and another "I am a follower of Christ."

Galatians 6:12-13

Those who attempt to make a good impression by trying to force you to be circumcised really want only to avoid being persecuted for their commitment to Christ.

1 Timothy 5:13

And on top of that, they learn to be idle, going around from house to house; and not only idle, but also gossips and busybodies, talking about things they should not be.

1 Timothy 6:5

[and] continual wranglings between people with corrupt minds, who are deprived of the truth. They think that [professing] godliness is a way to obtain [financial] gain.

2 Timothy 2:17-18

and their talk will spread like gangrene. Among these people are Hymenaeus and Philetus,

2 Timothy 4:3-4

For the time will come when people will not tolerate sound teaching, but will assemble to themselves teachers who will satisfy what their "itching ears" want to hear.

2 Peter 2:1-3

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.

2 Peter 2:18

[Although] their talk is big, what they say is worthless, and by [offering people] fleshly desires [i.e., sexual gratification], they lead people astray, who are barely escaping from the error of the world.

2 John 1:7

For many deceivers have begun circulating in the world; they are those who do not confess that Jesus Christ has come [to earth] in a physical body. Such a person is the deceiver and the antichrist [See I John 2:18f].

Jude 1:4-16

For certain men have secretly infiltrated [your ranks]; they are men who had been written about long ago that they should be judged [and condemned] for perverting the unearned favor of our God into [a license for] living unrestrained, indecent lives, and who deny [the identity and work of] our only Master and Lord, Jesus Christ.

Revelation 2:6

But you have this [in your favor]: You hate the [evil] deeds of the Nicolaitans, which I also hate [Note: These people were probably followers of someone named Nicolas and were known to be false teachers. See verse 15].