Genesis 15:2 NASB Abram said, “O Lord [H136] GOD [H3068], what will You give me, since I am childless, and the heir of my house is Eliezer of Damascus?”
[H136] = אֲדֹנָי ʼĂdônây, ad-o-noy'; an emphatic form of H113; the Lord (used as a proper name of God only):—(my) Lord.
[H3068] = יְהֹוָה Yehôvâh, yeh-ho-vaw'; from H1961; (the) self-Existent or Eternal; Jeho-vah, Jewish national name of God:—Jehovah, the Lord. Compare H3050, H3069.
In this specific biblical application, "Soverign" just means "Lord" (as in controller, master, owner) ... ie. GOD os the creator who owns us and is worthy of respect.
It is the oposite of the charges made in Romans 1:18-23 "For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men who suppress the truth in unrighteousness, because that which is known about God is evident within them; for God made it evident to them. For since the creation of the world His invisible attributes, His eternal power and divine nature, have been clearly seen, being understood through what has been made, so that they are without excuse. For even though they knew God, they did not honor Him as God or give thanks, but they became futile in their speculations, and their foolish heart was darkened. Professing to be wise, they became fools, and exchanged the glory of the incorruptible God for an image in the form of corruptible man and of birds and four-footed animals and crawling creatures."
