Genesis 15:5 ASV

³  And Abram said, Behold, to me thou hast given no seed: and, lo, one born in my house is mine heir.

⁴  And, behold, the word of Jehovah came unto him, saying, This man shall not be thine heir; But he that shall come forth out of thine own bowels shall be thine heir.

⁵  And he brought him forth abroad, and said, Look now toward heaven, and number the stars, if thou be able to number them: and he said unto him, So shall thy seed be.

⁶  And he believed in Jehovah; and he reckoned it to him for righteousness.

⁷  And he said unto him, I am Jehovah that brought thee out of Ur of the Chaldees, to give thee this land to inherit it.