The Book of Jude

How did the book of Jude make it into the Bible? Jude 14-15 quotes a prophesy from 1 Enoch 1:9 (which is footnoted in my RSV Bible). A quick reading of the book of Enoch will reveal large amounts of absurdity. It was labeled apocryphal for a reason. So the question is: If Jude made the canon, how can we trust the validity of the Bible's other books?