For it had been better for them ... - Compare the notes at Matthew 26:24. It would have been better for them, for:

(1) then they would not have dishonored the cause of religion as they have now done;

(2) they would not have sunk so deep in profligacy as they now have; and,

(3) they would not have incurred so aggravated a condemnation in the world of woe. If people are resolved on being wicked, they had better never pretend to be good. If they are to be cast off at last, it had better not be as apostates from the cause of virtue and religion.

For it had been better for them not to have known - For the reasons assigned above; because they have sinned against more mercy, are capable of more sin, and are liable to greater punishment.

The holy commandment - The whole religion of Christ is contained in this one commandment, "Thou shalt love the Lord thy God with all thy heart, with all thy soul, with all thy mind, and with all thy strength; and thy neighbor as thyself." He who obeys this great commandment, and this by the grace of Christ is possible to every man, is saved from sinning either against his God or against his neighbor. Nothing less than this does the religion of Christ require.

For it had been better for them,.... Not that ignorance is good, or to be excused; but it would have been a lesser evil, and not so much aggravated:

not to have known the way of righteousness; the same with "the way of truth", 2 Peter 2:2, and "the right way", 2 Peter 2:15, the Gospel, which points out the way and method of a sinner's justification before God, which is not by the works of the law, but by the righteousness of Christ imputed to them, and received by faith; and which teaches men to live soberly, righteously, and godly; and a large, notional, though not an experimental knowledge, these apostates had of the word and doctrine of righteousness, and indeed of the whole of the Christian religion, which may truly go by this name:

than after they have known it; owned, embraced, and professed it:

to turn: the Vulgate Latin version, and some copies, as the Alexandrian and others, add, to that which is behind; to their former lusts, or errors, or worse, which they had turned their backs upon externally:

from the holy commandment delivered unto them; by the commandment is meant the Gospel also, see 2 Peter 3:2; called holy, because of its nature and influence, and in opposition to the pollutions of the world; and which is the faith once delivered, Jde 1:3, and which they received, as delivered to them; and, particularly, the ordinances of it, which they once submitted to, kept, and observed, as they were delivered to them, but now relinquished, or corrupted: wherefore, it would have been better for them to have been in their former ignorance, either in Judaism, or in Gentilism, since proportionate to a man's light is his guilt, and so his punishment, see Romans 2:12.

For it had been better for them not to have known the way of righteousness, than, after they have known it, to turn from the holy commandment delivered unto them.

2:21 For it had been better, etc. To other sins there is then added the sin of rejecting the way of righteousness after an experimental knowledge of it.

2:21 The commandment - The whole law of God, once not only delivered to their ears, but written in their hearts.

21. the way of righteousness-"the way of truth" (2Pe 2:2). Christian doctrine, and "the knowledge of the Lord and Saviour."

turn-back again; so the Greek.

from the holy commandment-the Gospel which enjoins holiness; in opposition to their corruption. "Holy," not that it makes holy, but because it ought to be kept inviolate [Tittmann].

delivered-once for all; admitting no turning back.

2:17-22 The word of truth is the water of life, which refreshes the souls that receive it; but deceivers spread and promote error, and are set forth as empty, because there is no truth in them. As clouds hinder the light of the sun, so do these darken counsel by words wherein there is no truth. Seeing that these men increase darkness in this world, it is very just that the mist ofdarkness should be their portion in the next. In the midst of their talk of liberty, these men are the vilest slaves; their own lusts gain a complete victory over them, and they are actually in bondage. When men are entangled, they are easily overcome; therefore Christians should keep close to the word of God, and watch against all who seek to bewilder them. A state of apostacy is worse than a state of ignorance. To bring an evil report upon the good way of God, and a false charge against the way of truth, must expose to the heaviest condemnation. How dreadful is the state here described! Yet though such a case is deplorable, it is not utterly hopeless; the leper may be made clean, and even the dead may be raised. Is thy backsliding a grief to thee? Believe in the Lord Jesus, and thou shalt be saved.