Bereshis 15:3-5

Orthodox Jewish Bible

³ And Avram said, See, to me Thou hast given no zera; and, hinei, one born in my bais is my yoresh (heir).

⁴ And, hinei, the Devar Hashem came unto him saying, This shall not be thy yoresh; but he that shall come forth out of thine own body shall be thy yoresh.

⁵ And He brought him forth outside, and said, Look now toward Shomayim, and count the kokhavim, if thou be able to number them; and He said unto him, So shall thy zera be.