The Name of the LORD: Lord, Have Mercy

In the English translation of the Old Testament ...

LORD = Yahweh (Name of God)

Lord = Adonay (Title of God)

Lord GOD = Adonay Yahweh

GOD, the Lord = Yahweh Adonay

Definitions:

Yahweh is God's Name (Exodus 3:13-15)

Adonay is the title Master or Lord

The Old Testament was written in Hebrew

The New Testament was written in Greek

The Septuagint was a translation of the Old Testament into Greek

Matthew 22:44a Yahweh (the Living God) said to my Adonay (my Lord and Master)