Genesis 15:3

“And Abram said, behold, to me thou hast given no seed, etc.] He had bestowed many temporal blessings on him, as well as spiritual ones, having given himself in covenant, and all things in it, but he had not given him a child: and lo, one born in my house is mine heir; meaning either Eliezer or his son, whom he had made his heir, or intended to make him, since he had no child; or of course he would have been to, Lot his nephew having no sons; and this Eliezer descending from Aram, the youngest son of Shem, was like to be next heir, if Abram should have no child of his own, as Dr. Lightfoot observes f1012.”

“Eliezer of Damascus . . . one born in my house is mine heir--According to the usage of nomadic tribes, his chief confidential servant, would be heir to his possessions and honors. But this man could have become his son only by adoption; and how sadly would that have come short of the parental hopes he had been encouraged to entertain! His language betrayed a latent spirit of fretfulness or perhaps a temporary failure in the very virtue for which he is so renowned--and absolute submission to God's time, as well as way, of accomplishing His promise.”

“- The Faith of Abram 1. דבר dābār, “a word, a thing;” the word being the sign of the thing. 2. אדני 'ǎdonāy, “Adonai, the Lord;” related: “bring down, lay down.” This is the name usually read in place of Yahweh; but when, as in the present case, יהוה yehovâh and אדני 'ǎdonāy are in apposition, אלהים 'ĕlohı̂ym is read instead of the former. The Jews from a feeling of reverence avoided the utterance of this sacred name except on the most solemn occasions. This is said to have arisen from a stringent interpretation of Leviticus 24:16. According to some, this name was pronounced only once a year by the high priest, on the day of atonement, in the Holy of Holies, and according to others…”