26 For if we sin willfully after we have received the knowledge of the truth, there remains no more a sacrifice for sins, 27 but a certain fearful expectation of judgment, and a fierceness of fire which will devour the adversaries. 28 A man who disregards Moses’ law dies without compassion on the word of two or three witnesses. 29 How much worse punishment, do you think, will he be judged worthy of, who has trodden under foot the Son of God, and has counted the blood of the covenant with which he was sanctified an unholy thing, and has insulted the Spirit of grace? 30 For we know him who said, “Vengeance belongs to me,” says the Lord, “I will repay.” [1] Again, “The Lord will judge his people.” [2] 31 It is a fearful thing to fall into the hands of the living God. 32 But remember the former days, in which, after you were enlightened, you endured a great struggle with sufferings; 33 partly, being exposed to both reproaches and oppressions; and partly, becoming partakers with those who were treated so. 34 For you both had compassion on me in my chains, and joyfully accepted the plundering of your possessions, knowing that you have for yourselves a better possession and an enduring one in the heavens. 35 Therefore don’t throw away your boldness, which has a great reward. 36 For you need endurance so that, having done the will of God, you may receive the promise. 37 “In a very little while,
he who comes will come, and will not wait. 38 But the righteous will live by faith.
If he shrinks back, my soul has no pleasure in him.” [3] 39 But we are not of those who shrink back to destruction, but of those who have faith to the saving of the soul.

Matthew Henry's Commentary on Hebrews 10:26-39

Commentary on Hebrews 10:26-31

(Read Hebrews 10:26-31)

The exhortations against apostacy and to perseverance, are urged by many strong reasons. The sin here mentioned is a total and final falling away, when men, with a full and fixed will and resolution, despise and reject Christ, the only Saviour; despise and resist the Spirit, the only Sanctifier; and despise and renounce the gospel, the only way of salvation, and the words of eternal life. Of this destruction God gives some notorious sinners, while on earth, a fearful foreboding in their consciences, with despair of being able to endure or to escape it. But what punishment can be sorer than to die without mercy? We answer, to die by mercy, by the mercy and grace which they have despised. How dreadful is the case, when not only the justice of God, but his abused grace and mercy call for vengeance! All this does not in the least mean that any souls who sorrow for sin will be shut out from mercy, or that any will be refused the benefit of Christ's sacrifice, who are willing to accept these blessings. Him that cometh unto Christ, he will in no wise cast out.

Commentary on Hebrews 10:32-39

(Read Hebrews 10:32-39)

Many and various afflictions united against the early Christians, and they had a great conflict. The Christian spirit is not a selfish spirit; it puts us upon pitying others, visiting them, helping them, and pleading for them. All things here are but shadows. The happiness of the saints in heaven will last for ever; enemies can never take it away as earthly goods. This will make rich amends for all we may lose and suffer here. The greatest part of the saints' happiness, as yet, is in promise. It is a trial of the patience of Christians, to be content to live after their work is done, and to stay for their reward till God's time to give it is come. He will soon come to them at death, to end all their sufferings, and to give them a crown of life. The Christian's present conflict may be sharp, but will be soon over. God never is pleased with the formal profession and outward duties and services of such as do not persevere; but he beholds them with great displeasure. And those who have been kept faithful in great trails for the time past, have reason to hope for the same grace to help them still to live by faith, till they receive the end of their faith and patience, even the salvation of their souls. Living by faith, and dying in faith, our souls are safe for ever.