Philippians 3:18, 19
For as I have often told you before, and now declare even with tears: Many live as enemies of the cross of Christ. . . .

2 Timothy 1:15
You know that everyone in the Province of Asia has deserted me, including Phygelus and Hermogenes.

2 Timothy 2:18
who have deviated from the truth. They say that the resurrection has already occurred, and they undermine the faith of some.

2 Timothy 4:10
because Demas, in his love of this world, has deserted me and gone to Thessalonica. Crescens has gone to Galatia, and Titus to Dalmatia.

2 Peter 2:2, 20-22
Many will follow in their depravity, and because of them the way of truth will be defamed. . . .

2 Peter 3:16
He writes this way in all his letters, speaking in them about such matters. Some parts of his letters are hard to understand, which ignorant and unstable people distort, as they do the rest of the Scriptures, to their own destruction.

1 John 2:19
They went out from us, but they did not belong to us. For if they had belonged to us, they would have remained with us. But their departure made it clear that none of them belonged to us.

Jude 1:4, 5
For certain men have crept in among you unnoticed--ungodly ones who were designated long ago for condemnation. They turn the grace of our God into a license for immorality, and they deny our only Master and Lord, Jesus Christ. . . .

Revelation 12:9
And the great dragon was hurled down--the ancient serpent called the devil and Satan, the deceiver of the whole world. He was hurled to the earth, and his angels with him.