The O Antiphon for December 18, "O Adonai," is drawn from Isaiah 11:4-5 and 33:22.
For more on the O Antiphons and the Latin text of the O Antiphon for December 18 ("O Adonai"), see The O Antiphons.
O Antiphon for December 18
O Adonai, and Leader of the house of Israel, Who didst appear to Moses in the flame of the burning bush, and didst give unto him the Law on Sinai: come and with an outstretched arm redeem us.
