Hebrews 10:29

If then under the Old Covenant, when the law of Moses is set at nought, there is so great punishment, "Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God and hath counted the blood of the covenant an unholy [a common] thing, and hath done despite unto the Spirit of grace?" And how does a man "tread under foot the Son of God"? When partaking of Him in the mysteries (he would say) he has wrought sin, has he not trodden Him under foot? Has he not despised Him? For just as we make no account of those who are trodden under foot so also, they who sin have made no account of Christ; and so they have sinned. Thou art become the Body of Christ, and givest thou thyself to the devil, so that he treads thee under foot. "And accounted the blood a common thing," he says. What is "common"? It is "unclean," or the having nothing beyond other things. "And done despite unto the Spirit of grace." For he that accepts not a benefit, does despite to the benefactor. He made thee a son: and thou wishest to become a slave. He came to dwell with thee, and thou bringest in wicked imaginations to Him. Christ wished to stay with thee: and thou treadest Him down by surfeiting, by drunkenness. Let us listen, whoever partake of the mysteries unworthily: let us listen, whoever approach that Table unworthily. "Give not" (He says) "that which is holy unto the dogs, lest in time they trample them under their feet" (Matt. vii. 6), that is, lest they despise, lest they repudiate them. Yet he did not say this, but what was more fearful than this. For he constrains their souls by what is fearful. For this also is adapted to convert, no less than consolation. And at the same time he shows both the difference, and the chastisement, and sets forth the judgment upon them, as though it were an evident matter. "Of how much sorer punishment, suppose ye, shall he be thought worthy?" Here also he appears to me to hint at the mysteries.