The Third O Antiphon - O Radix Jesse - O Root of Jesse. O Lord is both root and flower of Jesse - the decendent from the kings of Israel, the King of Kings! Isaiah 11:1. Below is a Latin chant of today's O Antiphon:
And from O Come, O Come, Emmanuel:
O come, Thou Rod of Jesse, free
Thine own from Satan's tyranny;
From depths of hell Thy people save,
And give them victory o'er the grave.
Rejoice! Rejoice! Emmanuel
Shall come to thee, O Israel.