Charles Ellicott Commentary Hebrews 10:29

"of how much sorer punishment, think ye, shall he be judged worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant wherewith he was sanctified an unholy thing, and hath done despite unto the Spirit of grace?" — Hebrews 10:29 (ASV)

Shall he be thought worthy.—Better, shall he be accounted (or, judged) worthy, by God the Judge of all, when “the Day” comes. In the act of apostasy, the sinner trampled under foot the Son of God, treated with contempt and scorn Him to whom this highest Name belongs (Hebrews 1:1–4); and the principle of this act becomes the principle of the whole succeeding life.

That “blood” by which the new covenant was established (Hebrews 9:15–17)—the blood in which he himself had received the sanctification which the law could not give—he has esteemed an unholy thing.

There is no middle ground between highest reverence and utter contempt in such a case: to those who did not receive Jesus as Lord, He was a deceiver (Matthew 27:63), and one who deserved to die.

Has done despite.—Has treated with outrage and insult the Spirit whose gifts he had partaken of (Hebrews 6:4), returning arrogant scorn for “grace.”