Similar logic applies to Paul in Acts 17:23. Just because Paul references the inscription on an altar in Athens doesn't make that inscription inspired. Instead it's a point of reference that the audience understood to make the greater point.

I sometimes quote Frodo, from Lord of the Rings. I might quote Alice (in Wonderland) or Yoda (Star Wars). Quoting what fits my statement is not an endorsement that it's God-breathed Scripture. Jude quotes from the book of Enoch to support his point about the ultimate judgment of the wicked, which Jude applies to the false teachers of whom he has been speaking. Bauckham writes, "While this word indicates that Jude regarded the prophecies in 1 Enoch as inspired by God, it need not imply that he regarded the book as canonical Scripture."

"It was also about these [the ungodly] that Enoch, the seventh from Adam, prophesied, saying, 'Behold, the Lord comes with ten thousands of his holy ones, to execute judgment on all and to convict all the ungodly of all their deeds of ungodliness that they have committed in such an ungodly way, and of all the harsh things that ungodly sinners have spoken against him.' " (Jude 14-15 ESV-CE)

And He [God] will help them all, and light shall appear unto them, and He will make peace with them'. And behold! He comes with ten thousands of His holy ones to execute judgement upon all, and to destroy all the ungodly: and to convict all flesh of all the works of their ungodliness which they have ungodly committed, and of all the hard things which ungodly sinners have spoken against Him. (1 Enoch 1,8-9)

Why do you (or does your particular church tradition) think about Jude quoting the pseudepigraphal Book of Enoch here? How do you/your tradition explain it? Say what tradition you are in your comment (por ejemplo: "Baptist. I think XYZ thing, because QRST reason")

(I am a Catholic middle school religion teacher, and I do have a few things to say about the Catholic understanding of it, but I will hold off saying what I think until others have written)