But if he wash them not,.... Neither wash his clothes: nor bathe his flesh; if he is negligent, and does not take care to make use of these ablutions:

then he shall bear his iniquity; his guilt shall remain on him, and he shall suffer the punishment the law exposes him to, either by the hand of God, or the civil magistrate, which is due to persons that enter into the sanctuary in their uncleanness, or eat of holy things. For not washing his body the punishment was cutting off, and for not washing his garments, beating, as Jarchi says.

But if he wash them not, nor bathe his flesh; then he shall bear his iniquity.

17:16 His iniquity - The punishment of it, and therefore must offer a sacrifice for it.

17:10-16 Here is a confirmation of the law against eating blood. They must eat no blood. But this law was ceremonial, and is now no longer in force; the coming of the substance does away the shadow. The blood of beasts is no longer the ransom, but Christ's blood only; therefore there is not now the reason for abstaining there then was. The blood is now allowed for the nourishment of our bodies; it is no longer appointed to make an atonement for the soul. Now the blood of Christ makes atonement really and effectually; to that, therefore, we must have regard, and not consider it as a common thing, or treat it with indifference.