The Book of Jubilees, also known as 'Little Genesis' or 'Kufale', is a pseudepigraphal text of the Old Testament that rewrites the history of Genesis and part of Exodus, with emphasis on the division of time into jubilees and weeks of years. It is canonical only in the Ethiopian Orthodox Tewahedo Church and preserved entirely in Ge'ez. The book was originally written in Hebrew around the 2nd century BC and is cited by the Early Church Fathers.
Jubilees
Chapter 6
And on the new moon of the third month he went out of the ark and built an altar on that mountain.
And he made atonement for the land, and took a kid and made atonement with its blood for all the guilt of the land; because everything that had existed on it had been destroyed, except those who were in the ark with Noah.
And he placed the fat upon the altar, and he took a bull, and a goat, and a ram and kids, and salt, and a turtledove, and a young pigeon, put a burnt offering on the altar, and poured on it an offering mixed with oil and sprinkled with wine and incense spread over everything, and a pleasant aroma went up, acceptable before the Lord.
And the Lord smelled the pleasant aroma, and He made a covenant with him that there should be no more flood that would destroy the earth; that for all the days of the earth, seedtime and harvest shall never cease. Cold and heat, summer and winter, day and night shall not change their order, nor cease eternally.
"And you, increase and multiply upon the earth, and become many upon it, and be a blessing upon it. Fear and dread of you I will inspire in everything upon the earth and in the sea.
And behold, I have given you all the wild animals and all the winged things, and everything that moves on the earth, and the fish in the waters, and everything for food, as the green herbs, I have given you all things to eat.
But flesh with its life, with its blood, you shall not eat. For the life of all flesh is in the blood, so that the blood of their lives may not be required. From the hand of every man, and from the hand of every wild animal I will require the blood of man.
Whoever sheds human blood, by man his blood shall be shed, because in the image of God He made man.
And you, increase and multiply upon the earth."
And Noah and his sons swore that they would not eat blood that was in flesh, and he made a covenant before the Lord God forever through the generations of the earth in this month.
Concerning this He spoke to you, that you should make a covenant with the children of Israel in this month on the mountain with an oath of the covenant, which the Lord made with them forever.
And this testimony is written concerning you that you must observe this forever continually, so that you shall not eat on any day any blood of wild animals, of birds or of domestic animals during all the days of the earth, and the man who eats the blood of wild animals or of domestic animals or of birds during the days of the earth, he and his descendants shall be cut off from the earth.
And you command the children of Israel not to eat blood, so that their names and their descendants may stand before the Lord our God continually.
And for this law there is no limit of days because it is eternal. They shall observe this throughout their generations, so that they may continue to petition in His name with blood before the altar; every day in the morning and in the evening they shall seek forgiveness in His name perpetually before the Lord, so that they keep it and not be exterminated.
And He gave Noah and his sons a sign that there should not again be a flood on the earth.
He set His bow in a cloud as a sign of the eternal covenant that there should not again be a flood on the earth that would destroy it all the days of the earth.
For this reason it is ordained and written on the heavenly tablets, that they shall celebrate the feast of weeks in this month once a year, to renew the covenant every year.
And this festival was celebrated in heaven from the day of creation until the days of Noah. Twenty-six jubilees and five weeks of years, and Noah and his sons observed it for seven jubilees and one week of years, until the day of Noah's death, and from the day of Noah's death his sons continued it until the days of Abraham, and they ate blood.
But Abraham observed it, and Isaac and Jacob and their sons observed it until their days, and in their days the children of Israel forgot it until you celebrate it again on this mountain.
And you command the children of Israel to observe this festival throughout all their generations as a commandment for them. One day in the year in this month they shall celebrate the festival.
For this is the feast of weeks and the feast of first fruits. This feast is double and of a double nature. According to what is written and engraved concerning it, celebrate it.
For I wrote in the book of the first law, in which I wrote for you, that you shall celebrate at the corresponding season, one day in the year, and I explained to you its sacrifices, which the children of Israel shall remember and shall celebrate throughout all their generations in this month, one day each year.
And on the new moon of the first month, and on the new moon of the fourth month, and on the new moon of the seventh month, and on the new moon of the tenth month are the days of remembrance, and the days of the seasons in the four divisions of the year. This is written and ordained as a testimony forever.
And Noah ordained them for himself as festivals throughout the generations forever, so that they became a memorial to him.
And on the new moon of the first month he was asked to make for himself an ark, and on that day the earth became dry and he opened and saw the earth.
And on the new moon of the fourth month the mouths of the depths of the abyss were closed. And on the new moon of the seventh month all the mouths of the abysses of the earth were opened, and the waters began to descend into them.
And on the new moon of the tenth month the tops of the mountains were seen, and Noah rejoiced.
And for this reason he ordained them for himself as festivals in an eternal memorial, and thus they are ordained.
And they placed them on the heavenly tablets, each had thirteen weeks; because from one to the other the memorial of them was passed from the first to the second, and from the second to the third, and from the third to the fourth.
And all the days of the commandment shall be fifty-two weeks of years, and thus the whole year is complete.
Thus it is engraved and ordained on the heavenly tablets. And it shall not be neglected for any single year nor from year to year.
And command the children of Israel to observe the years according to this calculation - three hundred and sixty-four days - and it will constitute a complete year, and they shall not spoil this count of time of days and of feasts; for everything will fall upon them according to their testimony, and they shall not leave out any day nor disturb any feast.
But when they neglect and do not observe them according to His commandments, then they will disturb their count of time and the years will be moved from their order. The seasons and the years will have their order violated. And they will neglect their orders.
And all the children of Israel will forget and will not find the way of the years, and will forget the new moons, the seasons and the sabbaths, and they will err concerning all the order of the years.
For I know, and from now on I will declare to you, and it is not from my own invention, because the written book is before me, and on the heavenly tablets the division of days is ordained, so that they do not forget the feasts of the commandment and walk according to the feasts of the Gentiles and follow their errors and their ignorance.
For there will be those who will make accurate observations of the moon and how it is out of its season and arrives from year to year ten days earlier.
For this reason the day will come when they will err concerning the day of testimony and create an abominable day, and from this unclean day they will make festive, and will confuse all the days. The holy day with the unclean and the unclean day with the holy day. Then they will dissolve the months, sabbaths, feasts and jubilees.
For this reason I command and testify to you, so that you may testify to them that after your death your children will err, so that they will not make the year with only three hundred and sixty-four days, and for this reason they will dissolve the new moons, seasons, sabbaths and festivals, and they will eat all kinds of blood with all kinds of flesh.