Read the Seder narrative in Exodus 12. It tells you exactly what you have to do, and eating the lamb is on the list.
Catholics hear that passage every Holy Thursday.
Are you assuming I deny eating the Passover lamb is included? Do you see how eating that lamb foreshadows faith in the deliverer?
Are you ignoring the blood of the atonement? Are you familiar with Yom Kippur?
Were they saved by eating the lamb? ..
Ex 12: 7 Then they are to take some of the blood and put it on the sides and tops of the doorframes of the houses where they eat the lambs. 8 That same night they are to eat the meat roasted over the fire, along with bitter herbs, and bread made without yeast. 9 Do not eat the meat raw or boiled in water, but roast it over a fire—with the head, legs and internal organs. 10 Do not leave any of it till morning; if some is left till morning, you must burn it. 11 This is how you are to eat it: with your cloak tucked into your belt, your sandals on your feet and your staff in your hand. Eat it in haste; it is the Lord’s Passover.
12 “On that same night I will pass through Egypt and strike down every firstborn of both people and animals, and I will bring judgment on all the gods of Egypt. I am the Lord. 13 The blood will be a sign for you on the houses where you are, and when I see the blood, I will pass over you No destructive plague will touch you when I strike Egypt.
21 Then Moses summoned all the elders of Israel and said to them, “Go at once and select the animals for your families and slaughter the Passover lamb. 22 Take a bunch of hyssop, dip it into the blood in the basin and put some of the blood on the top and on both sides of the doorframe. None of you shall go out of the door of your house until morning. 23 When the Lord goes through the land to strike down the Egyptians, he will see the blood on the top and sides of the doorframe and will pass over that doorway, and he will not permit the destroyer to enter your houses and strike you down.
Were they saved by eating the Lamb or were they saved by the protection of HIS BLOOD?
They were not told to DRINK that blood..but to seek shelter under it..and by faith they obeyed ... They were saved by the blood of that Lamb ..as is every saved person that posts here on FR...