Why Does Jude Quote a Book That Isn't in the Bible?

Jude quotes 1 Enoch because a true statement can be preserved outside the biblical canon.

What Jude is doing

In Jude 1:14–15, Jude warns about false teachers and cites a prophecy attributed to Enoch: the Lord will come with his holy ones to judge ungodliness.

The wording closely resembles 1 Enoch 1:9, a Jewish work known in Jude’s day. That does not mean Jude declared the whole book inspired Scripture.

Instead, Jude treats this particular prophecy as true and fitting for his warning.

Quoting is not canonizing

Biblical writers sometimes use material outside the Old Testament without making every source biblical Scripture:

• Paul quotes Greek poets in Acts 17:28 and Titus 1:12.
• Paul refers to Jannes and Jambres in 2 Timothy 3:8, names supplied by Jewish tradition rather than the Old Testament text.
• Jude also alludes to a Jewish tradition about Michael and the devil disputing over Moses’ body in Jude 1:9.

An inspired writer may accurately cite a line, event, or tradition without endorsing everything in its source.

Why 1 Enoch mattered

1 Enoch was widely read among some Jewish groups before and around the time of Jesus. It develops themes Jude also addresses:

• rebellious angels,
• corrupt human teachers,
• coming judgment,
• God’s final victory.

Jude’s use of it shows he could speak into his readers’ world using a familiar text—while giving an authoritative apostolic warning.

Does this make 1 Enoch Scripture?

Not in the ordinary Christian canon. The historic mainstream churches did not receive 1 Enoch as part of Scripture, though the Ethiopian Orthodox Tewahedo Church does include it in its broader canon.

Jude’s point is not, “Read 1 Enoch as Bible.” It is:

God will judge the ungodliness these teachers are spreading.

The authority of Jude’s quotation comes from Jude as inspired Scripture, not from an automatic endorsement of every claim in 1 Enoch.