it goes back to old testament times, which is connected with sabath rest. every seventh day, a day dedicated to the lord. in the biblical tradition, the ancient jewish year, the land would be given a year. every sabath, every 50 years, there was a great jubilee that the people of god would celebrate, which was basically the idea of restitution. so slaves were set free, people lost property, the property was restored to them. debts were forgiven, families were reunited. so, i like to kind of somewhat loosely call it the biblical bailout plan. >> i see. >> but it was a time of restitution. so the church recaptured this sense of jubilee in the year 1300. and shortly after that in the 15th century, it was established that every 25 years would be a jubilee year dedicated to celebrating god's forgiveness of sins. and every once in awhile, a jubilee year is proclaimed by the pope outside of the cycle of 25 years. that's why it's called an extraordinary jubilee year. it's outside of the 25 years. pope francis declared this an extraordinary jubilee year. especially