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Feast of Weeks (Shavuot)

Illustration of Feast of Weeks (Shavuot)

Among the sacred observances preserved in the ancient pseudepigraphal writings, one stands out for its profound connection to covenantal renewal and the rhythms of creation. The Book of Jubilees presents this festival as the foremost of all appointed times, tracing its origins not merely to Sinai but to the very structure of heaven itself. In chapter 6, the text recounts how Noah, after the flood, establishes the observance on the first day of the third month, binding his descendants through an eternal oath that echoes the covenant made with creation. This emphasis elevates the feast beyond agricultural gratitude, framing it instead as a perpetual renewal of the divine order disrupted by human transgression. The patriarchal narratives in Jubilees further illustrate its centrality, with figures such as Abraham, Isaac, and Jacob each marking key moments of covenant through its celebration. Abraham’s renewal in chapter 15, for instance, aligns the rite with promises of land and progeny, while similar observances by his descendants underscore a continuous chain of fidelity. The text insists that the festival was already kept in heaven by the angels from the time of creation, positioning earthly practice as an imitation of celestial order rather than a later innovation. This heavenly precedent distinguishes the account from other Second Temple sources and integrates it with the solar calendar detailed across Jubilees and the Enochic astronomical book. Within the broader Enochian tradition, the feast gains additional layers through its alignment with themes of revelation and cosmic regularity. The Astronomical Book of 1 Enoch supplies the calendrical framework that ensures the observance falls consistently, free from lunar drift, thereby safeguarding its timing for covenantal commemoration. Although the Book of Jasher offers fewer explicit details, it echoes the patriarchal emphasis on seasonal rites tied to divine encounters. Together these texts portray the festival as both a memorial of law-giving and an affirmation of first fruits offered in harmony with the created order, inviting later readers to see their own fidelity as part of an unbroken heavenly pattern.

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Details

Category
Early Summer
Timing
50 days after First Fruits (6th of Sivan)
Season
Summer

Key Chapters

Key Passages

Feast of Weeks at Sinai

The Book of Jubilees 6:1-38

A1nd on the new moon of the third month he went forth from the ark, and built an altar on that mountain. And he made atonement for the earth, and took a kid and made atonement by its blood for all the guilt of the earth; for everything that had been on it had been destroyed, save those that were in the ark with Noah. And he placed the fat thereof on the altar, and he took an ox, and a goat, and a sheep and kids, and salt, and a turtle-dove, and the young of a dove, and placed a burnt sacrifice on the altar, and poured thereon an offering mingled with oil, and sprinkled wine and strewed frankincense over everything, and caused a goodly savour to arise, acceptable before the Lord. And the Lord smelt the goodly savour, and He made a covenant with him that there should not be any more a flood to destroy the earth; that all the days of the earth seed-time and harvest should never cease; cold and heat, and summer and winter, and day and night should not change their order, nor cease for ever. 'And you, increase ye and multiply upon the earth, and become many upon it, and be a blessing upon it. The fear of you and the dread of you I will inspire in everything that is on earth and in the sea. And behold I have given unto you all beasts, and all winged things, and everything that moves on the earth, and the fish in the waters, and all things for food; as the green herbs, I have given you all things to eat. But flesh, with the life thereof, with the blood, ye shall not eat; for the life of all flesh is in the blood, lest your blood of your lives be required. At the hand of every man, at the hand of every (beast) will I require the blood of man. Whoso sheddeth man's blood by man shall his blood be shed, for in the image of 9,10 God made He man. And you, increase ye, and multiply on the earth.' And Noah and his sons swore that they would not eat any blood that was in any flesh, and he made a covenant before the

2 Lord God for ever throughout all the generations of the earth in this month. On this account He spake to thee that thou shouldst make a covenant with the children of Israel in this month upon the mountain with an oath, and that thou shouldst sprinkle blood upon them because of all the words of the covenant, which the Lord made with them for ever. And this testimony is written concerning you that you should observe it continually, so that you should not eat on any day any blood of beasts or birds or cattle during all the days of the earth, and the man who eats the blood of beast or of cattle or of birds during all the days of the earth, he and his seed shall be rooted out of the land. 3 And do thou command the children of Israel to eat no blood, so that their names and their seed may be before the Lord our God continually. And for this law there is no limit of days, for it is for ever. They shall observe it throughout their generations, so that they may continue supplicating on your behalf with blood before the altar; every day and at the time of morning and evening they shall seek forgiveness on your behalf perpetually before the Lord that they may keep it and not be rooted out. And He gave to Noah and his sons a sign that there should not again be a flood on the earth. He set His bow in the cloud for a sign of the eternal covenant that there should not again be a flood on the earth to destroy it all the days of the earth. For this reason it is ordained and written on the heavenly tablets, that they should celebrate the feast of weeks in this month once a year, to renew the covenant every year. And this whole festival was celebrated in heaven from the day of creation till 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, till the day of Noah's death, and from the day of Noah's death his sons did away with (it) until the days of Abraham, and they eat blood. But Abraham observed it, and Isaac and Jacob and his children observed it up to thy days, and in thy days the children of Israel forgot it until ye celebrated it anew on this mountain. 4 And do thou command the children of Israel to observe this festival in all their generations for a commandment unto them: one day in the year in this month they shall celebrate the festival. For it is the feast of weeks and the feast of first fruits: this feast is twofold and of a double nature: according to what is written and engraven concerning it, celebrate it. For I have written in the book of the first law, in that which I have written for thee, that thou shouldst celebrate it in its season, one day in the year, and I explained to thee its sacrifices that the children of Israel should remember and should celebrate it throughout their generations in this month, one day in every year. 5 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. These are written and ordained as a testimony for ever. And Noah ordained them for himself as feasts for the generations for ever, so that they have become thereby a memorial unto him. And on the new moon of the first month he was bidden to make for himself an ark, and on that (day) the earth became dry and he opened 6 (the ark) and saw the earth. And on the new moon of the fourth month the mouths of the depths of the abyss beneath 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 was glad. And on this account he ordained them for himself as feasts for a memorial for ever, and thus are they ordained. 7 And they placed them on the heavenly tablets, each had thirteen weeks; from one to another (passed) their memorial, 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 will be two and fifty weeks of days, and (these will make) the entire year complete. Thus it is engraven and ordained on the heavenly tablets. And there is no neglecting (this commandment) for a single year or from year to year. 8 And command thou the children of Israel that they observe the years according to this reckoning- three hundred and sixty-four days, and (these) will constitute a complete year, and they will not disturb its time from its days and from its feasts; for everything will fall out in them according to their testimony, and they will not leave out any day nor disturb any feasts. But if they do neglect and do not observe them according to His commandment, then they will disturb all their seasons and the years will be dislodged from this (order), and they will neglect their ordinances. And all the children of Israel will forget and will not find the path of the years, and will forget the new moons, and seasons, and sabbaths and they will go wrong as to all the order of the years. For I know and from henceforth will I declare it unto thee, and it is not of my own devising; for the book (lies) written before me, and on the heavenly tablets the division of days is ordained, lest they forget the feasts of the covenant and walk according to the feasts of the Gentiles after their error and after their ignorance. For there will be those who will assuredly make observations of the moon -how (it) disturbs the seasons and comes in from year to year ten days too soon. For this reason the years will come upon them when they will disturb (the order), and make an abominable (day) the day of testimony, and an unclean day a feast day, and they will confound all the days, the holy with the unclean, and the unclean day with the holy; for they will go wrong as to the months and sabbaths and feasts and jubilees. For this reason I command and testify to thee that thou mayst testify to them; for after thy death thy children will disturb (them), so that they will not make the year three hundred and sixty-four days only, and for this reason they will go wrong as to the new moons and seasons and sabbaths and festivals, and they will eat all kinds of blood with all kinds of flesh.

Renewed by Noah and Abraham

The Book of Jubilees 15:1-3

A1nd in the fifth year of the fourth week of this jubilee, in the third month, in the middle of the month, Abram celebrated the feast of the first-fruits of the grain harvest. And he offered new offerings on the altar, the first-fruits of the produce, unto the Lord, an heifer and a goat and a sheep on the altar as a burnt sacrifice unto the Lord; their fruit offerings and their drink offerings he offered upon the altar with frankincense. And the Lord appeared to Abram, and said unto him:

2 'I am God Almighty; approve thyself before me and be thou perfect. And I will make My covenant between Me and thee, and I will multiply thee exceedingly.' And Abram fell on his face, and God talked with him, and said: 3 'Behold my ordinance is with thee, And thou shalt be the father of many nations.

Jacob celebrates at Bethel

The Book of Jubilees 44:1-4

A1nd Israel took his journey from Haran from his house on the new moon of the third month, and he went on the way of the Well of the Oath, and he offered a sacrifice to the God of his father Isaac on the seventh of this month. And Jacob remembered the dream that he had seen at Bethel, and he feared to go down into Egypt. And while he was thinking of sending word to Joseph to come to him, and that he would not go down, he remained there seven days, if perchance he could see a vision as to whether he should remain or go down. And he celebrated the harvest festival of the first-fruits with old grain, for in all the land of Canaan there was not a handful of seed , for the famine was over all the beasts and cattle and birds, and also over man. And on the sixteenth the Lord appeared unto him, and said unto him, 'Jacob, Jacob'; and he said, 'Here am I.' And He said unto him: 'I am the God of thy fathers, the God of Abraham and Isaac; fear not to go down into Egypt, for I will there make of thee a great nation I will go down with thee, and I will bring thee up (again), and in this land shalt thou be buried, and Joseph shall put his hands upon thy eyes. Fear not; go down into Egypt.'

2 And his sons rose up, and his sons' sons, and they placed their father and their possessions upon wagons. And Israel rose up from the Well of the Oath on the sixteenth of this third month, and he went to the land of Egypt. And Israel sent Judah before him to his son Joseph to examine the Land of Goshen, for Joseph had told his brothers that they should come and dwell there that they might be near him. And this was the goodliest (land) in the land of Egypt, and near to him, for all 3 (of them) and also for the cattle. And these are the names of the sons of Jacob who went into 4 Egypt with Jacob their father Reuben, the First-born of Israel; and these are the names of his sons Enoch, and Pallu, and Hezron and Carmi-five. Simeon and his sons; and these are the names of his sons: Jemuel, and Jamin, and Ohad, and Jachin, and Zohar, and Shaul, the son of the Zephathite woman-seven. Levi and his sons; and these are the names of his sons: Gershon, and Kohath, and Merari-four. Judah and his sons; and these are the names of his sons:

Did You Know?

1

Jubilees calls it the 'feast of oaths' and the most important annual feast.

2

It was observed in heaven from creation and by all the righteous patriarchs.

3

Jubilees traces it all the way back to Noah's covenant after the flood — not just Sinai.

4

It is called the 'feast of oaths' because every major covenant was renewed on this day.

5

Angels in heaven have observed it since creation, making earthly celebration a mirror of celestial worship.