Ye have not yet, resisted unto blood, etc. He proceeds farther, for he reminds us, that even when the ungodly persecute us for Christ's sake, we are then contending against sin. Into this contest Christ could not enter, for he was pure and free from all sin; in this respect, however, we are unlike him, for sin always dwells in us, and afflictions serve to subdue and put it to flight. In the first place we know that all the evils which are in the world, and especially death, proceed from sin; but this is not what the Apostle treats of; he only teaches us, that the persecutions which we endure for the Gospel's sake, are on another account useful to us, even because they are remedies to destroy sin; for in this way God keeps us under the yoke of his discipline, lest our flesh should become wanton; he sometimes also thus checks the impetuous, and sometimes punishes our sins, that we may in future be more cautious. Whether then he applies remedies to our sins, or anticipates us before we sin, he thus exercises us in the conflict with sin, referred to by the Apostle. With this honor indeed the Son of God favors us, that he by no means regards what we suffer for his Gospel as a punishment for sin. It behooves us still to acknowledge what we hear from the Apostle in this place, that we so plead and defend the cause of Christ against the ungodly, that at the same time we are carrying on war with sin, our intestine enemy. Thus God's grace towards us is twofold -- the remedies he applies to heal our vices, he employs for the purpose of defending his gospel. [1] But let us bear in mind whom he is here addressing, even those who had joyfully suffered the loss of their goods and had endured many reproaches; and yet he charges them with sloth, because they were fainting half way in the contest, and were not going on strenuously to the end. There is therefore no reason for us to ask a discharge from the Lord, whatever service we may have performed; for Christ will have no discharged soldiers, but those who have conquered death itself.

Footnotes

1 - "Striving against sin," or contending or fighting against sin, -- the sin of apostasy, says Grotius, -- the sin of their persecutors, say Macknight and Stuart, sin being considered here as standing for sinners, the abstract for the concrete. The Apostle says, that they had not yet resisted -- resisted what? This he seems to explain by saying, "contending against sin." It was then, the assault of sin that they had not yet resisted unto blood; and that sin was evidently apostasy, the sin plausibly presented to them, or ready to encompass and entangle them, mentioned in the first verse. The phraseology here is similar to what is in the preceding verse; a participle ends the sentence, and that qualifies the foregoing verb -- "that ye may not become wearied, being faint in your souls." Faintness or despondency in mind would inevitably be accompanied with weariness. Faith or strength of mind is necessary to prevent fatigue or weariness while engaged in contests and great trials; and as a preventive of despondency, we are directed attentively to consider how our savior bore the extreme trials which he had to endure. -- Ed.

Ye have not yet resisted unto blood, striving against sin - The general sense of this passage is, "you have not yet been called in your Christian struggles to the highest kind of sufferings and sacrifices. Great as your trials may seem to have been, yet your faith has not yet been put to the severest test. And since this is so, you ought not to yield in the conflict with evil, but manfully resist it." In the language used here there is undoubtedly a continuance of the allusion to the agonistic games - the strugglings and wrestlings for mastery there. In those games, the boxers were accustomed to arm themselves for the fight with the caestus. This at first consisted of strong leathern thongs wound around the hands, and extending only to the wrist, to give greater solidity to the fist. Afterward these were made to extend to the elbow, and then to the shoulder, and finally, they sewed pieces of lead or iron in them that they might strike a heavier and more destructive blow. The consequence was, that those who were engaged in the fight were often covered with blood, and that resistance "unto blood" showed a determined courage, and a purpose not to yield. But though the language here may be taken from this custom, the fact to which the apostle alludes, it seems to me, is the struggling of the Saviour in the garden of Gethsemane, when his conflict was so severe that, great drops of blood fell down to the ground see the notes on Matthew 26:36-44. It is, indeed, commonly understood to mean that they had not yet been called to shed their blood as martyrs in the cause of religion; see Stuart Bloomfield, Doddridge, Clarke, Whitby, Kuinoel, etc. Indeed, I find in none of the commentators what seems to me to be the true sense of this passage, and what gives an exquisite beauty to it, the allusion to the sufferings of the Saviour in the garden. The reasons which lead me to believe that there is such an allusion, are briefly these:
(1) The connection. The apostle is appealing to the example of the Saviour, and urging Christians to persevere amidst their trials by looking to him. Nothing would be more natural in this connection, than to refer to that dark night, when in the severest conflict with temptation which he ever encountered. he so signally showed his own firmness of purpose, and the effects of resistance on his own bleeding body, and his signal victory - in the garden of Gethsemane.
(2) the expression "striving against sin" seems to demand the same interpretation. On the common interpretation, the allusion would be merely to their resisting persecution; but here the allusion is to some struggle in their minds against "committing sin." The apostle exhorts them to strive manfully and perseveringly against; sin in every form, and especially against the sin of apostasy. To encourage them he refers them to the highest instance on record where there was a "striving against sin" - the struggle of the Redeemer in the garden with the great enemy who there made his most violent assault, and where the resistance of the Redeemer was so great as to force the blood through his pores. What was the exact form of the temptation there, we are not informed. It may have been to induce him to abandon his work even then and to yield, in view of the severe sufferings of his approaching death on the cross.
If there ever was a point where temptation would be powerful, it would be there. When a man is about to be put to death, how strong is the inducement to abandon his purpose, his plans, or his principles, if he may save his life! How many, of feeble virtue, have yielded just there! If to this consideration we add the thought that the Redeemer was engaged in a work never before undertaken; that he designed to make an atonement never before made; that he was about to endure sorrows never before endured; and that on the decision of that moment depended the ascendency of sin or holiness on the earth, the triumph or the fall of Satan's kingdom, the success or the defeat of all the plans of the great adversary of God and man, and that, on such an occasion as this, the tempter would use all his power to crush the lonely and unprotected man of sorrows in the garden of Gethsemane, it is easy to imagine what may have been the terror of that fearful conflict, and what virtue it would require in him to resist the concentrated energy of Satan's might to induce him even then to abandon his work. The apostle says of those to whom he wrote, that they had not yet reached that point; compare notes on Hebrews 5:7.
(3) this view furnishes a proper climax to the argument of the apostle for perseverance. It presents the Redeemer before the mind as the great example; directs the mind to him in various scenes of his life - as looking to the joy before him - disregarding the ignominy of his sufferings - enduring the opposition of sinners - and then in the garden as engaged in a conflict with his great foe, and so resisting sin that rather than yield he endured that fearful mental struggle which was attended with such remarkable consequences. This is the highest consideration which could be presented to the mind of a believer to keep him from yielding in the conflict with evil; and if we could keep him in the eye resisting even unto blood rather than yield in the least degree, it would do more than all other things to restrain us from sin. How different his case from ours! How readily we yield to sin! We offer a faint and feeble resistance, and then surrender. We think it will be unknown: or that others do it; or that we may repent of it; or that we have no power to resist it; or that it is of little consequence, and our resolution gives way. Not so the Redeemer, Rather than yield in any form to sin, he measured strength with the great adversary when alone with him in the darkness of the night, and gloriously triumphed! And so would we always triumph if we had the same settled purpose to resist sin in every form even unto blood.

Ye have not yet resisted unto blood - Many of those already mentioned were martyrs for the truth; they persevered unto death, and lost their lives in bearing testimony to the truth. Though you have had opposition and persecution, yet you have not been called, in bearing your testimony against sin and sinners, to seal the truth with your blood.
Striving against sin - Προς την ἁμαρτιαν ανταγωνι ζομενοι· An allusion to boxing at the Grecian games. In the former passages the apostle principally refers to the foot races.

(4) Ye have not yet resisted unto blood, striving against sin.
(4) He takes an argument from the profit which comes to us by God's chastisements, unless we are at fault. First of all because sin, or that rebellious wickedness of our flesh, is by this means tamed.

Ye have not yet resisted unto blood,.... They had resisted sin, and Satan, and the world, the men of it, and the lusts of it, and its frowns and flatteries, and also false teachers, even every adversary of Christ, and their souls; but they had not, as yet, resisted unto blood, or to the shedding of their blood, as some of the Old Testament saints had done; as some in the times of the Maccabees, and as James the apostle of Christ, and as Christ himself: wherefore the apostle suggests, that they ought to consider, that they had been indulged; and what they had been engaged in, were only some light skirmishes; and that they must expect to suffer as long as they were in the world, and had blood in them; and that their blood, when called for, should be spilled for the sake of Christ:
striving against sin; which is the principal antagonist the believer has, and is here particular pointed out: sin is here, by some, thought to be put for sinful men; or it may design the sin of those men, who solicited the saints to a defection from the truth; or the sin of apostasy itself; or that of unbelief; or rather indwelling sin, and the lusts of the flesh, which war against the soul. Now this is said, to sharpen and increase the saints resentment and indignation against it, as being their antagonist, with whom they strive and combat, and which is the cause of all the evils in the world, exposes to wrath to come, and separates from communion with God; and to encourage them to bear their sufferings patiently, since they are not without sin, as Christ was; and since their afflictions and sufferings are for the subduing of sin, and the increase of holiness.

not yet resisted unto blood--image from pugilism, as he previously had the image of a race, both being taken from the great national Greek games. Ye have suffered the loss of goods, and been a gazing-stock by reproaches and afflictions; ye have not shed your blood (see on Hebrews 13:7). "The athlete who hath seen his own blood, and who, though cast down by his opponent, does not let his spirits be cast down, who as often as he hath fallen hath risen the more determined, goes down to the encounter with great hope" [SENECA].
against sin--Sin is personified as an adversary; sin, whether within you, leading you to spare your blood, or in our adversaries, leading them to shed it, if they cannot through your faithfulness even unto blood, induce you to apostatize.

Unto blood - Unto wounds and death.