The book of Jude gives us a glimpse of who Jesus is in the  New Testament (N.T).

Written by Jude, possibly the half-brother of Jesus (Matthew 13:55; Mark 6:3), the dictum of this single chapter book is Fight! Contend! Do battle!.

From the book of Jude we can see that Jesus is the PRESERVER and the RESERVER. He preserves his believers unto eternal life and (Jude 1:1) and reserves  for judgment, those who reject his Salvation as did Cain for only by the shedding of blood is remission of sin, who rebel against his appointed Servants rejecting his word as did Core (Korah) and who reject his Sanctification as did Balaam who enticed the Israelites that were set apart to intermarry with those who did not believe in the Lord. (Jude 1:6; Jude 1, 11; Jude 1:13).

Jude also informs us that Jesus is the RETURNING LORD as prophesied by Enoch to execute judgment upon all (Jude 1:14) and showcases Jesus to be the One who is able to keep us from falling and present us blameless before the presence of his glory with exceeding joy, the Only wise God, Our Savior, to whom is ascribe ALL glory, ALL majesty, ALL power, ALL dominion, both now and for ever more. So be it. (Jude 1:24-25).

In Jude, Jesus is the preserver and the reserver, the returning Lord and the one to whom is ascribed all glory, majesty, power, and dominion, both now and for ever more.

Points to ponder:
Are you PRESERVED or are your RESERVED? Do not rebel and reject the Lord, but believe in the Lord Jesus Christ.

Jude 1:1-2 (KJV)
1 Jude, the servant of Jesus Christ, and brother of James, to them that are sanctified by God the Father, and preserved in Jesus Christ, and called:
2 Mercy unto you, and peace, and love, be multiplied.

Jude 1:6,11, 13 (KJV)
6 And the angels which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day.
11 Woe unto them! for they have gone in the way of Cain, and ran greedily after the error of Balaam for reward, and perished in the gainsaying of Core.
13 Raging waves of the sea, foaming out their own shame; wandering stars, to whom is reserved the blackness of darkness for ever.

Jude 1:14-15 (KJV)
14 And Enoch also, the seventh from Adam, prophesied of these, saying, Behold, the Lord cometh with ten thousands of his saints,
15 To execute judgment upon all, and to convince all that are ungodly among them of all their ungodly deeds which they have ungodly committed, and of all their hard speeches which ungodly sinners have spoken against him.

Jude 1:24-25 (KJV)
24 Now unto him that is able to keep you from falling, and to present you faultless before the presence of his glory with exceeding joy,
25 To the only wise God our Saviour, be glory and majesty, dominion and power, both now and ever. Amen.