The Jubilee Cycles are spoken of in Leviticus 25. Until recently no one knew when they were. We now have ample Biblical and historical artifacts that show us which years are Jubilee Years and which years are Sabbatical (Shemitah) Years. God’s timetable still operates by them. And it is with this understanding that we can know when the Messiah is to come and when the rapture is to take place.
Lev 25:10 And you shall consecrate the fiftieth year, and proclaim liberty throughout the land to all its inhabitants. It shall be a jubilee for you when each of you shall return to his property and each of you shall return to his clan.
We have a clear example of God proclaiming liberty and bringing His people back to the land on a Jubilee year in recent history.
The United Nations, which had just been formed in 1945 at the end of WW II, issued the Partition Plan for Palestine, which recommended a partition of Mandatory Palestine at the end of the British Mandate. On 29 November 1947, the United Nations General Assembly voted 33 to 13, with 10 abstentions and 1 absent, in favor of the modified Partition Plan.
The very next day civil war broke out and it resulted in the declaration of Independence of the State of Israel on 14 May 1948.
1947 was a Jubilee year when the Jews were restored to their homeland and liberty from the oppression of WWII was finally over. This act alone does not prove when the Jubilee years are. We have a lot of other facts that do prove when the Sabbatical and Jubilee years are and many of them come right out of the Bible. But this event just so happened to take place in the Jubilee year of 1947.