Lev레 Leviticus레위기, chapter장 Book of Leviticus레위기, chapter장 25

And youi shall number seven Shabbat of years unto youi, seven times seven years; and the space of the seven Shabbat of years shall be unto youi forty and nine years.

Then shall youi cause the trumpet of the jubilee to sound on the tenth [day] of the seventh month, in the day of atonement shall you2f make the trumpet sound throughout all your land.Lev 23:27