The LORD said to Moses and Aaron in the land of Egypt:

This month will stand at the head of your calendar; you will reckon it the first month of the year.

Tell the whole community of Israel: On the tenth of this month every family must procure for itself a lamb, one apiece for each household.

If a household is too small for a lamb, it along with its nearest neighbor will procure one, and apportion the lamb’s cost in proportion to the number of persons, according to what each household consumes.

Your lamb must be a year-old male and without blemish. You may take it from either the sheep or the goats.

You will keep it until the fourteenth day of this month, and then, with the whole community of Israel assembled, it will be slaughtered during the evening twilight.

They will take some of its blood and apply it to the two doorposts and the lintel of the houses in which they eat it.

This is how you are to eat it: with your loins girt, sandals on your feet and your staff in hand, you will eat it in a hurry. It is the LORD’s Passover.

For on this same night I will go through Egypt, striking down every firstborn in the land, human being and beast alike, and executing judgment on all the gods of Egypt—I, the LORD!

But for you the blood will mark the houses where you are. Seeing the blood, I will pass over you; thereby, when I strike the land of Egypt, no destructive blow will come upon you.

This day will be a day of remembrance for you, which your future generations will celebrate with pilgrimage to the LORD; you will celebrate it as a statute forever.

Moses summoned all the elders of Israel and said to them, “Go and procure lambs for your families, and slaughter the Passover victims.”

Then take a bunch of hyssop, and dipping it in the blood that is in the basin, apply some of this blood to the lintel and the two doorposts. And none of you shall go outdoors until morning.

For when the LORD goes by to strike down the Egyptians, seeing the blood on the lintel and the two doorposts, the LORD will pass over that door and not let the destroyer come into your houses to strike you down.

“You will keep this practice forever as a statute for yourselves and your descendants.

Thus, when you have entered the land which the LORD will give you as he promised, you must observe this rite.

When your children ask you, ‘What does this rite of yours mean?’

you will reply, ‘It is the Passover sacrifice for the LORD, who passed over the houses of the Israelites in Egypt; when he struck down the Egyptians, he delivered our houses.'”

Isaiah 53

Who hath believed our report? and to whom is the arm of the Lord revealed? And he shall grow up as a tender plant before him, and as a root out of a thirsty ground: there is no beauty in him, nor comeliness: and we have seen him, and there was no sightliness, that we should be desirous of him: Despised, and the most abject of men, a man of sorrows, and acquainted with infirmity: and his look was as it were hidden and despised, whereupon we esteemed him not. Surely he hath borne our infirmities and carried our sorrows: and we have thought him as it were a leper, and as one struck by God and afflicted. But he was wounded for our iniquities, he was bruised for our sins: the chastisement of our peace was upon him, and by his bruises we are healed.

All we like sheep have gone astray, every one hath turned aside into his own way: and the Lord hath laid on him the iniquity of us all. He was offered because it was his own will, and he opened not his mouth: he shall be led as a sheep to the slaughter, and shall be dumb as a lamb before his shearer, and he shall not open his mouth. He was taken away from distress, and from judgment: who shall declare his generation? because he is cut off out of the land of the living: for the wickedness of my people have I struck him. And he shall give the ungodly for his burial, and the rich for his death: because he hath done no iniquity, neither was there deceit in his mouth. And the Lord was pleased to bruise him in infirmity: if he shall lay down his life for sin, he shall see a long-lived seed, and the will of the Lord shall be prosperous in his hand.

Because his soul hath laboured, he shall see and be filled: by his knowledge shall this my just servant justify many, and he shall bear their iniquities. Therefore will I distribute to him very many, and he shall divide the spoils of the strong, because he hath delivered his soul unto death, and was reputed with the wicked: and he hath borne the sins of many, and hath prayed for the transgressors.

The next day, John saw Jesus coming to him, and he saith: Behold the Lamb of God, behold him who taketh away the sin of the world. (John 1:29)

Knowing that you were not redeemed with corruptible things as gold or silver, from your vain conversation of the tradition of your fathers: But with the precious blood of Christ, as of a lamb unspotted and undefiled… (1 Peter 1:18-19)

Agnus Dei, qui tollis peccata mundi, miserere nobis.
Agnus Dei, qui tollis peccata mundi, miserere nobis.
Agnus Dei, qui tollis peccata mundi, dona nobis pacem.

Lamb of God, who takes away the sins of the world, have mercy upon us.
Lamb of God, who takes away the sins of the world, have mercy upon us.
Lamb of God, who takes away the sins of the world, grant us peace.