And Abram said, Lord God. Adonai Jehovah; the first use of these terms in combination, the second, which usually has the vowel-points of the first, being here written with the vocalization of Elohim.
Adonai, an older plural form of Adonim, pluralis excellentive (Gesenius), though by some the termination is regarded as a suffix (Ewald, Furst), is a term descriptive of the Divine sovereignty, from adan = dun, or din, to rule or judge; connected with which is the Phoenician aden, an honorary epithet of deity, and recognized as such in Deuteronomy 10:17 (vide Furst, 'Hebrew Lexicon,' sub voce).