2 Timothy 3:1
But you should know this: There will be terrible times in the last days [of the Christian age].
2 Peter 3:3
First of all, you should understand that, in the final days, mockers with evil desires will come [to you] saying, mockingly,
2 Thessalonians 2:3-12
Do not allow anyone to deceive you in any way, for it will not occur until the rebellion comes first and the man of lawlessness becomes evident. [Note: This "rebellion" refers to a significant falling away from the teaching and practice of true Christianity (See I Tim. 4:1), characterized by the rise of an authoritarian religious leader]. This man is doomed to be destroyed
1 Timothy 4:1-3
Now the Holy Spirit specifically says that in later times [Note: "Later times" in the New Testament usually refers to the period following the first coming of Christ and the establishment of the church], some people will fall away from the faith [i.e., the true teaching of Christianity]. They will pay attention to deceitful spirits [i.e., lying people] and the teaching of evil spirits.
2 Timothy 4:3
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.
1 John 2:18
Dear children, it is [now] the last hour [i.e., the final period of God's dealing with people on earth], and since you have heard that an antichrist [i.e., a person who is against Christ] is coming, even now [you should be aware that] many antichrists have [already] come. This is [one way] we know that this is the last hour.
Jude 1:17
But you dearly loved ones, you should remember the message that was previously told to you by the apostles of our Lord Jesus Christ,
Revelation 8:1-13
Then when the Lamb broke open the seventh seal, there was silence in heaven for about half an hour.