While the Israelites were still in the land of Egypt, the Lord gave the following instructions to Moses and Aaron: 2 “From now on, this month will be the first month of the year for you. 3 Announce to the whole community of Israel that on the tenth day of this month each family must choose a lamb or a young goat for a sacrifice, one animal for each household. 4 If a family is too small to eat a whole animal, let them share with another family in the neighborhood. Divide the animal according to the size of each family and how much they can eat. 5 The animal you select must be a one-year-old male, either a sheep or a goat, with no defects.
6 “Take special care of this chosen animal until the evening of the fourteenth day of this first month. Then the whole assembly of the community of Israel must slaughter their lamb or young goat at twilight. 7 They are to take some of the blood and smear it on the sides and top of the doorframes of the houses where they eat the animal. 8 That same night they must roast the meat over a fire and eat it along with bitter salad greens and bread made without yeast. 9 Do not eat any of the meat raw or boiled in water. The whole animal—including the head, legs, and internal organs—must be roasted over a fire. 10 Do not leave any of it until the next morning. Burn whatever is not eaten before morning.
11 “These are your instructions for eating this meal: Be fully dressed,[a] wear your sandals, and carry your walking stick in your hand. Eat the meal with urgency, for this is the Lord’s Passover. 12 On that night I will pass through the land of Egypt and strike down every firstborn son and firstborn male animal in the land of Egypt. I will execute judgment against all the gods of Egypt, for I am the Lord! 13 But the blood on your doorposts will serve as a sign, marking the houses where you are staying. When I see the blood, I will pass over you. This plague of death will not touch you when I strike the land of Egypt.
14 “This is a day to remember. Each year, from generation to generation, you must celebrate it as a special festival to the Lord. This is a law for all time. 15 For seven days the bread you eat must be made without yeast. On the first day of the festival, remove every trace of yeast from your homes. Anyone who eats bread made with yeast during the seven days of the festival will be cut off from the community of Israel. 16 On the first day of the festival and again on the seventh day, all the people must observe an official day for holy assembly. No work of any kind may be done on these days except in the preparation of food.
17 “Celebrate this Festival of Unleavened Bread, for it will remind you that I brought your forces out of the land of Egypt on this very day. This festival will be a permanent law for you; celebrate this day from generation to generation. 18 The bread you eat must be made without yeast from the evening of the fourteenth day of the first month until the evening of the twenty-first day of that month. 19 During those seven days, there must be no trace of yeast in your homes. Anyone who eats anything made with yeast during this week will be cut off from the community of Israel. These regulations apply both to the foreigners living among you and to the native-born Israelites. 20 During those days you must not eat anything made with yeast. Wherever you live, eat only bread made without yeast.”
21 Then Moses called all the elders of Israel together and said to them, “Go, pick out a lamb or young goat for each of your families, and slaughter the Passover animal. 22 Drain the blood into a basin. Then take a bundle of hyssop branches and dip it into the blood. Brush the hyssop across the top and sides of the doorframes of your houses. And no one may go out through the door until morning. 23 For the Lord will pass through the land to strike down the Egyptians. But when he sees the blood on the top and sides of the doorframe, the Lord will pass over your home. He will not permit his death angel to enter your house and strike you down.
24 “Remember, these instructions are a permanent law that you and your descendants must observe forever. 25 When you enter the land the Lord has promised to give you, you will continue to observe this ceremony. 26 Then your children will ask, ‘What does this ceremony mean?’ 27 And you will reply, ‘It is the Passover sacrifice to the Lord, for he passed over the houses of the Israelites in Egypt. And though he struck the Egyptians, he spared our families.’” When Moses had finished speaking, all the people bowed down to the ground and worshiped.
28 So the people of Israel did just as the Lord had commanded through Moses and Aaron.29 And that night at midnight, the Lord struck down all the firstborn sons in the land of Egypt, from the firstborn son of Pharaoh, who sat on his throne, to the firstborn son of the prisoner in the dungeon. Even the firstborn of their livestock were killed. 30 Pharaoh and all his officials and all the people of Egypt woke up during the night, and loud wailing was heard throughout the land of Egypt. There was not a single house where someone had not died. Exodus 12: 1-30 NLT
This is the beginning of a new life, marked by this passover as a new beginning to their year. Each year will be started in such a manner that all Israel may remember, and that the story of Messiah be amplified to all generations. We may ask why the strict of observance, but it is a life and death message. Every physical element of this feast portrays, in it's part, the gospel message. Remove every trace of yeast, for it takes only a little of such thinking to blind men to the truth, accept only the pure and unbleshished lamb, the bread of heaven, and let the blood be upon your outer door, to mark that you belong to Him who shed it. Let it say, that I am not ashamed of the gospel, and let it cover me from the all consuming fire.
6 [About the condition of your church] your boasting is not good [indeed, it is most unseemly and entirely out of place]. Do you not know that [just] a little leaven will ferment the whole lump [of dough]?
7 Purge (clean out) the old leaven that you may be fresh (new) dough, still uncontaminated [as you are], for Christ, our Passover [Lamb], has been sacrificed.
8 Therefore, let us keep the feast, not with old leaven, nor with leaven of vice and malice and wickedness, but with the unleavened [bread] of purity (nobility, honor) and sincerity and [unadulterated] truth. 1 Corinthians 5:6-8
It is here so spelled out, but the fortitude of the message does not come merely by hearing, for men are deaf, and it is in the taking of the life of the Lamb that one becomes separated. When one receives Christ as Lord, it is the beginning of a new life, and he is now sharing also in His cross. Pharaoh, the Egyptians, your friends, family and all else who do not believe, will like the Pharisees demand a sign. They will not accept the sign given, the sign of the coming of God, the sacrifice of the unblemished for those dead in their trespasses and sin. There will be weeping, and the anger of men will be against those who believe, but hold fast and love them that hate you, for is that not what God has done for us? Paint the door of my life, oh God, and let my actions and my words reflect Your glory. All belongs to You, so let me not be afraid, let me not be ashamed, and do not let the leaven of greed or malice enter my heart. I thank you for the body and the blood of Your Son, please open the hearts of my friends and my family to receive it.