In the apocryphal Book of Jubilees, time is marked by jubilees as directed by God. The system is seven groups of seven years, and the 50th is the year of release or great jubilee--this 50th year is a general reset plus it makes nice groups of 50 which are much easier to count with than 49.
In the apocryphal Book of Jubilees, time is marked by jubilees as directed by God. The system is seven groups of seven years, and the 50th is the year of release or great jubilee--this 50th year is a general reset plus it makes nice groups of 50 which are much easier to count with than 49.
https://biblehub.com/library/deane/pseudepigrapha/the_book_of_jubilees.htm
When is the next Jubilee? [major datefagging]
https://www.thejoshlink.com/article303.htm