O Adonai: in reading of Sacred Scripture, the revealed name (YHWH) is replaced by the divine title "LORD", in Hebrew "Adonai"

Behold, the days are coming, says the LORD,

when I will raise up a righteous shoot to David;

As king he shall reign and govern wisely,

he shall do what is just and right in the land.

In his days Judah shall be saved,

Israel shall dwell in security.

This is the name they give him:

“The LORD our justice.”

- Jer 23

"Out of respect for the holiness of God, the people of Israel do not pronounce his name. In the reading of Sacred Scripture, the revealed name (YHWH) is replaced by the divine title "LORD" (in Hebrew Adonai, in Greek Kyrios). It is under this title that the divinity of Jesus will be acclaimed: 'Jesus is LORD.'" 

CCC 209