I have been long assured that the apostle, in Heb. 6 and 10, does not contemplate any amount of moral evil, but such offenses as call in question the glory and sufficiency of the Word of the Son of God. Such as “do despite to the Spirit of grace,” or, “that tread under foot the Son of God,” or “count the blood of the covenant an unholy thing.” Such offenses as take the place of presumptuous sins under the law. (See Num. 15)
Presumptuous sins were not pieces of moral iniquity, but direct insults to the majesty of the Lawgiver— such as picking up sticks on the Sabbath-day. And now, when grace, and not law, is dispensed, when the effectual work of the Son of God is declared, presumptuous sin is putting dishonor on that by going back to carnal, legal, self-righteous confidences.
The present system of ordinances is very like the offense contemplated in those solemn passages. It is committed against the dispensational provisions of grace.