Exodus 12:9

Eat not of it raw, nor sodden... with water.

Not raw, as thus it was unfit for use; nor sodden with water, which would take away its strength and savor.

His head with his legs.

The lamb was to be roasted whole, not. bone broken, the entrails being cleansed and put back, and all the viscera, as heart, liver, etc., included. Boiling would be liable to separate the members, but the typical wholeness of the lamb was an essential thing as setting forth the oneness of the chosen people, and this was preserved in roasting.-- F. H. Newhall. The preservation of Christ, so that not. bone was broken, had the same signification; and God ordained this that he might appear as the true Paschal Lamb, that was slain for the sins of the world.-- Baehr.

Purtenance.

It may be supposed, however, that these last simply included the heart, lungs, liver, kidneys, etc., and not the intestinal canal.-- Bush.

Let nothing of it remain.

This entire consumption of the lamb constitutes one marked difference between the Passover and all other sacrifices in which either. part or the whole was burned, and thus offered directly to God. The whole substance of the sacrificed lamb was to enter into the substance of the people, the blood only excepted, which was sprinkled as. propitiatory and sacrificial offering.-- Canon Cook.