"For certain people have crept in unnoticed who long ago were designated for this condemnation, ungodly people, who pervert the grace of our God into sensuality and deny our only Master and Lord, Jesus Christ. Now I want to remind you, although you once fully knew it, that Jesus, who saved a people out of the land of Egypt, afterward destroyed those who did not believe. And the angels who did not stay within their own position of authority, but left their proper dwelling, he has kept in eternal chains under gloomy darkness until the judgment of the great day— just as Sodom and Gomorrah and the surrounding cities, which likewise indulged in sexual immorality and pursued unnatural desire, serve as an example by undergoing a punishment of eternal fire. Yet in like manner these people also, relying on their dreams, defile the flesh, reject authority, and blaspheme the glorious ones." Jude 4-8

"Enter by the narrow gate. For the gate is wide and the way is easy that leads to destruction, and those who enter by it are many. For the gate is narrow and the way is hard that leads to life, and those who find it are few." Matthew 7:13-14 

Because of the binding nature of biblical authority, the faith that God has entrusted once for all to his holy people (v.3) we deal with the issue of the eternal nature of the souls of men and women. 

"God, in His own time and in His own way, will bring the world to its appropriate end. According to His promise, Jesus Christ will return personally and visibly in glory to the earth; the dead will be raised; and Christ will judge all men in righteousness. The unrighteous will be consigned to Hell, the place of everlasting punishment. The righteous in their resurrected and glorified bodies will receive their reward and will dwell forever in Heaven with the Lord." Baptist Faith and Message 2000, Article 10, Last Things

Article II. "...For then shall the righteous go into everlasting life, and receive that fullness of joy and refreshing which shall come from the presence of the Lord: but the wicked, who know not God, and obey not the gospel of Jesus Christ, shall be cast into eternal torments, and punished with everlasting destruction from the presence of the Lord, and from the glory of his power. Article III. As Christ would have us to be certainly persuaded that there shall be a day of judgment, both to deter all men from sin, and for the greater consolation of the godly in their adversity: so will he have that day unknown to men, that they may shake off all carnal security, and be always watchful, because they know not at what hour the Lord will come; and may be ever prepared to say, Come, Lord Jesus, come quickly. Amen." Westminster Confession of Faith, Chapter 33

1. We are to contend or struggle for the faith (v.3) because belief in the finished work of Christ on the cross is the only road to saving faith. (Matthew 7:13-14, Acts 4:12)

2. We contend for the faith in light of the sobering reality of eternity (v.6-7).

3. Rejection of biblical authority (the faith) leads to an unraveling/destruction.

4. Understanding the ‘once and for all’ nature of the reality of Christ leads to urgency.

QUESTIONS:

1. How do we keep “eternity in view”?

“And Nothing is very strong: strong enough to steal away a man's best years not in sweet sins but in a dreary flickering of the mind over it knows not what and knows not why, in the gratification of curiosities so feeble that the man is only half aware of them, in drumming of fingers and kicking of heels, in whistling tunes that he does not like, or in the long, dim labyrinth of reveries that have not even lust or ambition to give them a relish, but which, once chance association has started them, the creature is too weak and fuddled to shake off.” CS Lewis, The Screwtape Letters 

2. Notice the difference in the motivational message: 

• I want you to understand and come to Christ because there is flourishing and joy in knowing Christ. 
  
• I want you to understand the mercy of the cross because apart from that people will spend eternity in a place of judgement and destruction. (Luke 13:28) 

3. How do we live with urgency? 

"It is a serious thing to live in a society of possible gods and goddesses, to remember that the dullest and most uninteresting person you can talk to may one day be a creature which, if you saw it now, you would be strongly tempted to worship, or else a horror and a corruption such as you now meet, if at all, only in a nightmare. All day long we are, in some degree, helping each other to one or other of these destinations. It is in the light of these overwhelming possibilities, it is with the awe and the circumspection proper to them, that we should conduct all our dealings with one another, all friendships, all loves, all play, all politics. There are no ordinary people. You have never talked to a mere mortal. Nations, cultures, arts, civilizations -these are mortal, and their life is to ours as the life of a gnat. But it is immortals whom we joke with, work with, marry, snub, and exploit – immortal horrors or everlasting splendors. This does not mean that we are to be perpetually solemn. We must play. But our merriment must be of that kind (and it is, in fact, the merriest kind) which exists between people who have, from the outset, taken each other seriously – no flippancy, no superiority, no presumption. And our charity must be a real and costly love, with deep feeling for the sins in spite of which we love the sinner – no mere tolerance, or indulgence which parodies love as flippancy parodies merriment. Next to the Blessed Sacrament itself, your neighbor is the holiest object presented to your senses. If he is your Christian neighbor, he is holy in almost the same way, for in him also Christ vere latitat – the glorifier and the glorified, Glory Himself is truly hidden." CS Lewis, The Weight of Glory