Luke chapter 4:18, 19 says “The Spirit of the Lord is upon me, because he hath anointed me to preach the gospel to the poor; he hath sent me to heal the brokenhearted, to preach deliverance to the captives, and recovering of sight to the blind, to set at liberty them that are bruised, To preach the acceptable year of the Lord.”
Jubilee is the acceptable year of the Lord. Every seven years is a sabbath of years. Seven set of sabbath years equals 49, 7 x 7. The 50th year is Jubilee!
Leviticus 25:8, 10 says “And thou shalt number seven sabbaths of years unto thee, seven times seven years; and the space of the seven sabbaths of years shall be unto thee forty and nine years.