“for then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be. And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened. Then if any man shall say unto you, Lo, here is Christ, or there; believe it not. For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.”
Matthew 24:21-24 KJV
https://bible.com/bible/1/mat.24.21-24.KJV
Jude
English Standard Version
Greeting
1 Jude, a servant[a] of Jesus Christ and brother of James,
To those who are called, beloved in God the Father and kept for[b] Jesus Christ:
2 May mercy, peace, and love be multiplied to you.
Judgment on False Teachers
3 Beloved, although I was very eager to write to you about our common salvation, I found it necessary to write appealing to you to contend for the faith that was once for all delivered to the saints. 4 For certain people have crept in unnoticed who long ago were designated for this condemnation, ungodly people, who pervert the grace of our God into sensuality and deny our only Master and Lord, Jesus Christ.
5 Now I want to remind you, although you once fully knew it, that Jesus, who saved[c] a people out of the land of Egypt, afterward destroyed those who did not believe. 6 And the angels who did not stay within their own position of authority, but left their proper dwelling, he has kept in eternal chains under gloomy darkness until the judgment of ...