Genesis 15:7

And he said unto him, I am the LORD that brought thee out of Ur of the Chaldees, to give thee this land to inherit it.

I am the Lord that brought thee out of Ur. The divine person who appeared repeatedly to the patriarch expressly called Himself Yahweh (H3068) only on two occasions-namely, once here in the earlier part of his conversation with Abram, and afterward in what appears to have been the beginning of His miraculous communications with Jacob (Genesis 28:13). It was in the highest degree seasonable to assure Abram that He who had called him out of Ur, to "go into a land which he should show him," was the identical Person who now ratified the promissory grant of that land by a solemn oath.