Lord God. — Heb., Lord Jehovah, as in Genesis 15:2.
Whereby shall I know that I shall inherit it? — Jehovah had required Abram to leave his home in Ur of the Chaldees on a general promise of future endowment with the land of Canaan. Abram now asks this question, not from want of faith, but from a desire for a more direct confirmation of the promise and fuller knowledge of the details. What Abram, therefore, receives is an exact and circumstantial prophecy, made in the form of a solemn covenant.