The Lord my Great Lord.
God is the Master and majestic Lord. God is our authority.
Psalms 8 Isaiah 40:3-5 Ezekiel 16:8 Habakkuk 3:19.
Adonai is the plural of Adon. This term is the verbal parallel to Yahweh, Jehovah and YHWH (which was considered too holy to be pronounced). The word "Adonai" is not a proper noun nor is it directly a name of God. It is an emphatic form of the word "Adon" which means "lord" or "master". That is an statement of someone who is above everyone else, the one who is superior, that is why its common use is THE LORD.