Leviticus 25:9 - Joseph Benson’s Commentary on the Old and New Testaments

Cause the trumpet of jubilee to sound The name jubilee is taken either from the Hebrew word יובל jobel, which signifies first a ram, and then a ram's horn by the sound whereof it was proclaimed; or from Jubal, the inventor of musical instruments, (Genesis 4:21,) because it was celebrated with music and all expressions of joy. The seventh month Which was the first month of the year for civil affairs; the jubilee therefore began in that month; and, as it seems, upon this very tenth day, when the trumpet sounded, as other feasts generally began when the trumpet sounded. In the day of atonement A very fit time, that when they fasted and prayed for God's mercy to them in the pardon of their sins, then they might exercise their charity to men in forgiving their debts; and to teach us, that the foundation of all solid comfort must be laid in repentance and atonement for our sins through Christ.