And many that are first shall be last. This sentence was added in order to shake off the indolence of the flesh. The apostles, though they had scarcely begun the course, were hastening to demand the prize. And such is the disposition of almost all of us, that, when a month has elapsed, we ask, like soldiers who have served their time, to receive a discharge. But Christ exhorts those who have begun well (Galatians 3:3; 5:7) to vigorous perseverance, and at the same time gives warning, that it will be of no avail to runners to have begun with alacrity, if they lose courage in the midst of the course. In like manner Paul also warns us, that not all who run obtain t/re prize, (1-Corinthians 9:24;) and in another passage he exhorts believers, by referring to his own example, to: forget those things which are behind, and press forward to the remaining portion of their course, (Philippians 3:13,14.) As often, therefore, as we call to mind the heavenly crown, we ought, as it were, to feel the application of fresh spurs, that we may not be more indolent for the future.

This verse should have been connected with the following chapter
The parable there spoken is expressly to illustrate this sentiment. See it explained in the notes at Matthew 20:16.
Remarks On Matthew 19
1. We should not throw ourselves unnecessarily in the way of the enemies of religion, Matthew 19:1. Jesus, to avoid the dangers to which he was exposed, left Jerusalem, and passed over to the other side of the Jordan. If duty calls us to remain in the presence of our enemies and the enemies of religion, we should do it. If we can do them good, we should do it. If our presence will only provoke them to anger and bitterness, then we should turn aside. Compare the notes at Matthew 10:23.
2. People will seek every occasion to ensnare Christians, Matthew 19:3. Questions will be proposed with great art, and with an appearance of sincerity, only for the purpose of leading them into difficulty. Cunning men know well how to propose such questions, and triumph much when they have perplexed believers. This is often the boast of people of some standing, who think they accomplish the great purposes of their existence if they can confound other people, and think it signal triumph if they can make others as miserable as themselves.
3. We should not refuse to answer such persons with mildness, when the Bible has settled the question, Matthew 19:4-6. Jesus answered a captious question, proposed on purpose to ensnare him. We may often do much to confound the enemies of religion, and to recommend it, when without passion we hear their inquiries, and deliberately inform them that the question has been settled by God. We had better, however, far better, say nothing in reply, than to answer in anger or to show that we are irritated. All the object of the enemy is gained if he can make us angry.
4. People will search and pervert the Bible for authority to indulge their sins and to perplex Christians, Matthew 19:7. No device is more common than to produce a passage of Scripture known to be misquoted or perverted, yet plausible, for the purpose of perplexing Christians. In such cases, the best way, often, is to say nothing. If unanswered, people will be ashamed of it; if answered, they gain their point, and are ready for debate and abuse.
5. We learn from this chapter that there is no union so intimate as the marriage connection, Matthew 19:6. Nothing is so tender and endearing as this union appointed by God for the welfare of man.
6. This union should not be entered into slightly or rashly. It involves all the happiness of this life and much of that to come. The union demands:
(1) congeniality of feeling and disposition;
(2) of rank or standing in life;
(3) of temper;
(4) similarity of acquirements;
(5) of age;
(6) of talent;
(7) intimate acquaintance.
It should also be a union on religious feelings and opinions:
(1) because religion is more important than anything else;
(2) because it will give more happiness in the married life than anything else;
(3) because where one only is pious, there is danger that the religion of the other will be obscured and blighted;
(4) because no prospect is so painful as that of eternal separation;
(5) because it is paganish, brutal, and mad, to partake the gifts of God in a family and offer no thanksgiving; inexpressibly wicked to live from day to day as if there were no God, no heaven, no hell;
(6) because death is near, and nothing will soothe the pangs of parting but the hope of meeting in the resurrection of the just.
7. No human legislature has a right to declare divorces except in one single case, Matthew 19:9. If they do, they are accessories to the crime that may follow, and presume to legislate where God has legislated before them.
8. Those thus divorced, or pretended to be divorced, and marrying again, are, by the declaration of Jesus Christ, living in adultery, Matthew 19:9. It is no excuse to say that the law of the land divorced them. The law had no such right. If all the legislatures of the world were to say that it was lawful for a man to steal or to commit murder, it would not make it so, and, in spite of human permission, God would hold a man answerable for theft and murder. So, also, of adultery.
9. The marriage union demands kindness and love, Matthew 19:6. The husband and the wife are one. Love to each other is love to a second self. Hatred, and anger, and quarrels are against ourselves. The evils and quarrels in married life will descend on ourselves, and be gall and wormwood in our own cup.
10. Infants may be brought to Jesus to receive his blessing, Matthew 19:12-15. While on earth, he admitted them to his presence and blessed them with his prayers. If they might be brought then, they may be brought now. Their souls are as precious; their dangers are as great; their salvation is as important. A parent should require the most indubitable evidence that Jesus will not receive his offspring, and will be displeased if the offering is made, to deter him from this inestimable privilege.
11. If children may be brought, they should be brought. It is the solemn duty of a parent to seize upon all possible means of benefiting his children, and of presenting them to God to implore his blessing. In family prayer, in the sanctuary, and in the ordinance of baptism, the blessing of the Redeemer should be sought early and constantly on their precious and immortal souls.
12. Earnestness and deep anxiety are proper in seeking salvation, Matthew 19:16. The young man came running; he kneeled. It was not form and ceremony; it was life and reality. Religion is a great subject. Salvation is important beyond the power of language to express. Eternity is near, and damnation thunders along the path of the guilty. The sinner must be saved soon, or die forever. He cannot be too earnest. He cannot press with too great haste to Jesus. He should come running, and kneeling, and humbled, and lifting the agonizing cry, "What must I do to be saved?"
13. We should come young, Matthew 19:20. No one can come too young. God has the first claim on our affections. He made us, he keeps us, he provides for us, and it is right that we should give our first affections to him. No one who has become a Christian ever yet felt that he had become one too young. No young person that has given his heart to the Redeemer ever yet regretted it. They may give up the frivolous world to do it; they may leave the circles of the dance and the song; they may be exposed to contempt and persecution, but no matter. He who becomes a true Christian, no matter of what age or rank, blesses God that he was inclined to do it, and the time never can come when for one moment he will regret it. Why, then, will not the young give their hearts to the Saviour, and do that which they know they never can for one moment regret?
14. It is no dishonor for those who hold offices, and who are people of rank, to inquire on the subject of religion, Luke 18:18. Men of rank often suppose that it is only the weak, the credulous, and the ignorant that ever feel any anxiety about religion. Never was a greater mistake. It has been only profligate, and weak, and ignorant people that have been thoughtless. Two-thirds of all the profound investigations of the world have been on this very subject. The wisest and best of the pagans have devoted their lives to inquire about God and their own destiny. So in Christian lands. Were Bacon, Newton, Locke, Milton, Hale, and Boerhaave men of weak minds? Yet their deepest thoughts and most anxious inquiries were on this very subject. So in our own land. Were Washington, Ames, Henry, Jay, and Rush men of weak minds? Yet they were professed believers in revelation. And yet young men of rank, and wealth, and learning often think that they show great independence in refusing to think of what occupied the profound attention of these men, and fancy they are great only by refusing to tread in their steps. Never was a greater or more foolish mistake. If anything demands attention, it is, surely, the inquiry whether we are to be happy forever, or wretched; whether there is a God and Saviour; or whether we are "in a forsaken and fatherless world."
15. It is as important for the rich to seek religion as the poor, Matthew 19:22. They will as certainly die; they as much need religion. Without it they cannot be happy. Riches will drive away no pain on a death-bed - will not go with us when we die - will not save us.
16. It is of special importance that wealthy young persons should be Christians. They are exposed to many dangers. The world - the "happy" and flattering world - will lead them astray. Fond of fashion, dress, and amusement, as many of them are, they are exposed to a thousand follies and dangers, from which nothing but religion can secrete them. Besides, they may do much good; and God will hold them answerable for all the good they might have done with their wealth.
17. The amiable, the lovely, the moral, need also an interest in Christ, Mark 10:21. If amiable, we should suppose they would be ready to embrace the Saviour. None was ever so moral, so lovely, so pure as he. If we really loved amiableness, then we should come to him - we should love him. But, alas! how many amiable young persons turn away from him, and refuse to follow him! Can they be really lovers of that which is pure and lovely? If so, then why turn away from the Lamb of God?
18. The amiable and the lovely need a better righteousness than their own. With all this, they may make an idol of the world; they may be proud, sensual, selfish, prayerless, and thoughtless about dying. Externally they appear lovely; but oh, how far is the heart from God!
19. Inquirers about religion usually depend on their own works, Matthew 19:16. They are not willing to trust to Jesus for salvation, and they ask what they shall do; and it is only when they find that they can do nothing - that they are poor, and helpless, and wretched that they east themselves on the mercy of God and find peace.
20. Compliments and flattering titles are evil, Matthew 19:17. They ascribe something to others which we know they do not possess. Often beauty is praised where we know there is no beauty - accomplishment where there is no accomplishment - talent where there is no talent. Such praises are falsehood. We know them to be such. We intend to deceive by them, and we know that they will produce pride and vanity. Often they are used for the purpose of destruction. If a man praises us too much, we should look to our purse or our virtue. We should feel that we are in danger, and the next thing will be a dreadful blow - the heavier for all this flattery. They that use compliments much, expect them from others; are galled and vexed when they are not obtained; and are in danger when they are.
21. If we are to be saved, we must do just what God commands us. Matthew 19:17-18. This is all we have to do. We are not to invent anything of our own. God has marked out the course, and we must follow it.
22. We are easily deceived about keeping the law, Matthew 19:17. We often think we observe it, when it is only the outward form that we have kept. The law is spiritual, and God requires the heart.
23. Riches are a blessing if used aright; if not, they are deceitful, dangerous, ruinous, Matthew 19:23-24. Thousands have lost their souls by the love of riches. None have ever been saved by it.
24. It is our duty to forsake all for Christ, Matthew 19:27-29. Be it little or much, it is all the same to him. It is the heart that he looks at; and we may as really show our love by giving up a fishing-boat and net, as by giving up a palace or a crown. If done in either case, it will be accepted.
25. Religion has its own rewards, Matthew 19:28-29. It gives more than it takes. It more than compensates for all that we surrender. It gives peace, joy, comfort in trial and in death, and heaven beyond. This is the testimony of all Christians of all denominations of all that have lived, and of all that do live that they never knew true peace until they found it in the gospel. The testimony of so many must be true. They have tried the world in all its forms of gaiety, folly, and vice, and they come and say with one voice, Here only is true peace. On any other subject they would be believed. Their testimony here must be true.
26. Those eminent for usefulness here will be received to distinguished honors and rewards in heaven, Matthew 19:28. They that turn many to righteousness shall shine as stars in the firmament forever. See the notes at Daniel 12:3.

But many that are first, etc. - The Jews, who have been the first and most distinguished people of God, will in general reject the Gospel of my grace, and be consequently rejected by me. The Gentiles, who have had no name among the living, shall be brought to the knowledge of the truth, and become the first, the chief, and most exalted people of God. That this prediction of our Lord has been literally fulfilled, the present state of the Christian and Jewish Churches sufficiently proves. To illustrate this fully, and to demonstrate that the Jews and Gentiles were now put on an equal footing by the Gospel, our Lord speaks the following parable, which has been unhappily divided from its connection by making it the beginning of a new chapter.

(8) But many [that are] first shall be last; and the last [shall be] first.
(8) To have begun well, and not to continue unto the end, is not only unprofitable, but also hurts very much.

But many that are first shall be last,.... This may refer unto, or be occasioned by, either the young ruler; signifying that he, and others like him, who were superior in riches and honour, were first in this world, of the first rank and figure, should be the last in the world to come:
and the last shall be first; the apostles, who were last in this world, being poor, mean, and abject, should be the first in the other: or to the Scribes and Pharisees, who were in the chief place, and highest esteem, in the Jewish church, and yet least in the kingdom of heaven; when, on the other hand, the publicans and sinners, who were in the lowest class, and in least esteem, went first into it: or to the case of persecution, when some, who seem most forward to endure it at a distance, when it comes nearer, are most backward to it; whilst others, who were most fearful of it, and ready to shrink at the thoughts of it, most cheerfully bear it: or to the apostles themselves, one of which, who was now first, Judas, should be last; and the apostle Paul, who was last of all, as one born out of due time, should be first: or to Jews and Gentiles, intimating, that the Jews, who were first in outward privileges, would be rejected of God for their unbelief, and contempt of the Messiah; and the Gentiles, who were last called, should be first, or chief, in embracing the Messiah, professing his Gospel, and supporting his interest. This sentence is confirmed, and illustrated, by a parable, in the following chapter.

Many shall be last, etc. There will be reversals; those rich on earth, but poor hereafter; those high in station, degraded hereafter; and the lowly on earth, exalted hereafter. The right man to follow any cause, be it what it will, is he who loves it well enough to fling to it everything he has in the world, and then think that not enough, and so fling himself after it. This last item often weighs down the scales in heaven, and the man gets what he gave himself for.

But many first - Many of those who were first called, shall be last - Shall have the lowest reward: those who came after them being preferred before them: and yet possibly both the first and the last may be saved, though with different degrees of glory. Matthew 20:16; Mark 10:31; Luke 13:30.