We find this verse near the end of the small letter of Jude. The structure of this letter is quite interesting. In the very beginning, Jude (calling himself a bondservant of Jesus Christ and a brother of James, which means he was also a half-brother of Jesus) mentions that while he was very diligent or eager to write about their common salvation, he found it necessary to exhort them to contend for the faith. He then launches into a lengthy description, which is the bulk of the letter, of how evil people will try to destroy the church from the inside out by causing divisions. Then, near the very end, in the light of the situation that the church is in danger from ungodly people in its midst, we find our verse, which is the second half of this complete sentence.
Jude 1:20 But you, beloved, building yourselves up on your most holy faith, praying in the Holy Spirit, 21 keep yourselves in the love of God, looking for the mercy of our Lord Jesus Christ unto eternal life.Click here for more..