"For it is impossible for those who were once enlightened" etc. (verse 4). Here the apostle continues the digression which he began at Hebrews 5:11. The parenthesis has two divisions: the first, Hebrews 5:11-14 is reprehensible; the second, Hebrews 6:1-20 is hortatory. In chapter 6 he exhorts the Hebrews unto two duties: to progress in the Christian course (verses 1-11); to persevere therein (verses 12-20). The first exhortation is proposed in verses 1,2 and qualified in verse 3. The motive to obedience is drawn from the danger of apostasy (verses 4-6). The opening "For" of verse 4 intimates the close connection of our present passage with that which immediately precedes. It draws a conclusion from what the apostle had been saying in Hebrews 5:11-14. It amplifies the "if" in verse 3. It points a most solemn warning against their continuance in their present sloth. It draws a terrible contrast from the possibility of verse 3. "The apostle regards the retrogression of the Hebrews with dismay. He sees in it the danger of an entire, confirmed, wilful, and irrecoverable apostasy from the truth. He beholds them on the brink of a precipice, and he therefore lifts up his voice, and with vehement yet loving earnestness he warns them against so fearful an evil" (Adolph Saphir).
Three things claim our careful attention in coming closer to our passage: the persons here spoken of, the sin they commit, the doom pronounced upon them. In considering the persons spoken of it is of first importance to note that the apostle does not say, "us who were once enlightened", nor even "you", instead, he says "those". In sharp contrast from them, he says to the Hebrews, "Beloved, we are persuaded better things of you".
"Afterwards, when the apostle comes to declare his hope and persuasion concerning these Hebrews that they were not such as those whom he had before described, nor such as would fall away unto perdition, he doth it upon three grounds whereon they were differenced from them as: 1. That they had such things as did accompany salvation; that is, such as salvation is inseparable from. None of these things therefore had he ascribed unto those whom he describeth in this place (verses 4-6); for if he had so done, they would not have been unto him an argument and evidence of a contrary end, that these should not fall away and perish as well as those. Wherefore he ascribes nothing to these here in the text that doth peculiarly accompany salvation. 2. He describes them by their duties of obedience and fruits of faith. This was their work and labor of love towards the name of God, verse 10. And hereby, also, doth he differentiate them from those in the text, concerning whom he supposeth that they may perish eternally, which these fruits of saving faith and sincere love cannot do. 3. He adds, that, in the preservation of those there mentioned, the faithfulness of God was concerned: God is not unrighteous to forget. For they were such he intended as were interested in the covenant of grace, with respect whereunto alone there is any engagement on the faithfulness or righteousness of God to preserve men from apostasy and ruin; and there is so with an equal respect unto all who are so taken into the covenant. But of those in the text he supposeth no such thing; and thereupon doth not intimate that either the righteousness or faithfulness of God was anyway engaged for their preservation, but rather the contrary" (Dr. John Owen).
It is scarcely accurate to designate as "mere professors" those described in verses 4,5. They were a class who had enjoyed great privileges, beyond any such as now accompany the preaching of the Gospel. Those here portrayed are said to have had five advantages, which is in contrast from the six things enumerated in verses 1, 2, which things belong to man in the flesh, under Judaism. Five is the number of grace, and the blessings here mentioned pertain to the Christian dispensation. Yet were they not true Christians. This is evident from what is not said. Observe, they were not spoken of as Gods elect, as those for whom Christ died, as those who were born of the Spirit. They are not said to be justified, forgiven, accepted in the Beloved. Nor is anything said of their faith, love, or obedience. Yet these are the very things which distinguish a real child of God. First, they had been "enlightened". The Sun of righteousness had shone with healing in His wings, and, as Matthew 4:16 says, "The people which sat in darkness saw great light, and to them which sat in the region and shadow of death light is sprung up". Unlike the heathen, whom Christ, in the days of His flesh, visited not, those who came under the sound of His voice were wondrously and gloriously illumined.
The Greek word for "enlightened" here signifies "to give light or knowledge by teaching". It is so rendered by the Septuagint in Judges 13:8, 2 Kings 12:2, 17:27. The apostle Paul uses it for "to make manifest", or "bring to light" in 1 Corinthians 4:5, 2 Timothy 1:10. Satan blinds the minds of those who believe not, lest "the light of the gospel should shine unto them" (2 Cor. 4:4), that is, give the knowledge of it. Thus, "enlightened" here means to be instructed in the doctrine of the gospel, so as to have a clear apprehension of it. In the parallel passage in Hebrews 10:26 the same people are said to have "received the knowledge of the truth", cf. also 2 Peter 2:20, 21. It is, however, only a natural knowledge of spiritual things, such as is acquired by outward hearing or reading; just as one may be enlightened by taking up the special study of one of the sciences. It falls far short of that spiritual enlightenment which transforms (2 Cor. 3:18). An illustration of a unregenerate person being "enlightened", as here, is found in the case of Balaam; Numbers 24:4.
Second, they had "tasted" of the heavenly gift. To "taste" is to have a personal experience of, in contrast from mere report. "Tasting does not include eating, much less digesting and turning into nourishment what is so tasted; for its nature being only thereby discerned it may be refused, yea, though we like its relish and savor, on some other consideration. The persons here described, then, are those who have to a certain degree understood and relished the revelation of mercy; like the stony-ground hearers they have received the Word with a transcient joy" (John Owen). The "tasting" is in contrast from the "eating" of John 6:50-56.
Third, they were "made partakers of the Holy Spirit". First, it should be pointed out that the Greek word for "partakers" here is a different one from that used in Colossians 1:12 and 2 Peter 1:4, where real Christians are in view. The word here simply means "companions", referring to what is external rather than internal. It is to be observed that this item is placed in the center of the five, and this because it describes the animating principle of the other four, which are all effects. These apostates had never been "born of the Spirit" (John 3:6), still less were their bodies His "temples" (1 Cor. 6:19). Nor do we believe this verse teaches that the Holy Spirit had, at any time, wrought within them, otherwise Philippians 1:6 would be contravened. It means that they had shared in the benefit of His supernatural operations and manifestations: "The place was shaken" (Acts 4:31) illustrates. We quote below from Dr. J. Brown:
"It is highly probable that the inspired writer refers primarily to the miraculous gifts and operations of the Holy Spirit by which the primitive dispensation of Christianity was administered. These gifts were by no means confined to those who were transformed by the renewing of their minds. The words of our Lord in Matthew 7:22, 23 and of Paul in 1 Corinthians 13:1, 2 seem to intimate, that the possession of these unrenewed men was not very uncommon in that age; at any rate they plainly show that their possession and an unregenerate state were by no means incompatible".
Taking the passage as a whole, it needs to be remembered that all who had professed to receive the Gospel were not born of God: the parable of the Sower shows that. Intelligence might be informed, conscience searched, natural affections stirred, and yet there be "no root" in them. All is not gold that glitters. There has always been a "mixt multitude" (Ex. 12:38) who accompany the people of God. Moreover, there is in the real Christian the old heart, which is "deceitful above all things and desperately wicked", and therefore is he in constant need of faithful warning. Such, God has given in every dispensation: Genesis 2:17; Leviticus 26:15, 16; Matthew 3:8; Romans 11:21; 1 Corinthians 10:12.
Finally, let it be said that while Scripture speaks plainly and positively of the perseverance of the saints, yet it is a perseverance of saints, not unregenerate professors. Divine preservation is not only in a safe state, but also in a holy course of disposition and conduct. We are "kept by the power of God through faith". We are kept by the Spirit working in us a spirit of entire dependency, renouncing our own wisdom and strength. The only place from which we cannot fall is one down in the dust. It is there the Lord brings His own people, weaning them from all confidence in the flesh, and giving them to experience that it is when they are weak they are strong. Such, and such only, are saved and safe forever.