His head with his legs... — The lamb was to be roasted whole: “not a bone of it was to be broken” (Exodus 12:46). Justin Martyr says that it was prepared for roasting by means of two wooden spits, one perpendicular and the other transverse, which extended it on a sort of cross, and made it aptly typify the Crucified One.
The purtenance thereof. — Heb., its inside. The entrails were taken out, carefully cleansed, and then replaced.