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 50
And after this Law I made known to you the days of the Sabbaths in the wilderness of Sinai, which is between Elim and Sinai.
And I taught you concerning the Sabbaths of the land on Mount Sinai, and I told you about the days of the jubilees in the sabbaths of the years; but the present day I have not yet told you until the day you entered the land which you will possess.
And the land also shall keep its sabbath while they dwell upon it, and they shall know the year of the jubilee.
For I have ordained for you the weeks of years and the years of the jubilees. There are forty-nine jubilees from the days of Adam until this day, and one week and two years; and there will be yet forty years to come.
And the jubilees shall pass, until Israel is cleansed of all guilt of fornication, and impurity, and pollution, and sin, and error, and dwells with confidence in all the land, and there shall be no more a Satan or any evil one, and the land shall be cleansed from that time forever.
And behold the commandments concerning the Sabbaths - I have written them for you - and all the judgments and the laws.
Six days you shall work, but on the seventh day is the Sabbath of the Lord your God. On it you shall not do any kind of work, you and your sons, and your menservants and your maidservants, and all your cattle and the strangers who are with you also.
And the man who does any work on this day shall die. Whoever profanes that day, whoever lies with his wife, or whoever says he will do something on it, who goes on a journey concerning any buying or selling, and whoever draws water which he has not prepared for himself on the sixth day, and whoever takes any burden to carry it out of his tent or out of his house shall die.
You shall not do any work on the Sabbath day, except what you have prepared for yourselves on the sixth day, thus to eat, and drink, and rest, and keep the Sabbath from all work on that day, and bless the Lord God, who gave you a feast day and a holy day. A day of holy reign for all Israel is this day among their days forever.
For great is the honor which the Lord gave to Israel, so that they should eat and drink and be satisfied on this festal day, and rest on it from all work which belongs to the work of the sons of men, except burning incense and bringing offerings and sacrifices before the Lord.
Only this work shall be done on the Sabbath days in the sanctuary of the Lord your God; that they may make atonement for Israel with sacrifice continually day by day as a pleasant memorial before the Lord, and that He may receive them always day after day as you were commanded.
And every man who does any work on it, or goes on a journey, or plows the farm whether in his house or in any other place, and whoever lights a fire, or rides on any animal, or travels by boat on the sea, and whoever attacks or kills anything, or slaughters a wild animal or a bird, or whoever captures an animal or a bird or a fish, or whoever fasts or makes war on the Sabbath.
The man who does any of these things on the Sabbath shall die, so that the children of Israel may observe the Sabbaths according to the commandments concerning the Sabbaths of the land, as it is written on the tablets which He gave into my hands that I should write for you the laws of the seasons, and the seasons according to the divisions of their days.