The title 'Lord' was used by St. Elizabeth when she greeted the Virgin Mary. St. Elizabeth was filled with the Holy Spirit when she heard the Virgin's greeting, and said to her: "But why is this granted to me, that the mother of my Lord should come to me? For indeed, as soon as the voice of your greeting sounded in my ears, the baby leaped in my womb for joy" (Lk. 1:43). St. Elizabeth said this when she was filled with the Holy Spirit, and feeling unworthy to be visited by the mother of the Lord. And that was a confession of Christ's Divinity.