Genesis 15:4 YLT

²  And Abram saith, 'Lord Jehovah, what dost Thou give to me, and I am going childless? and an acquired son in my house is Demmesek Eliezer.'

³  And Abram saith, 'Lo, to me Thou hast not given seed, and lo, a domestic doth heir me.'

⁴  And lo, the word of Jehovah 'is' unto him, saying, 'This 'one' doth not heir thee; but he who cometh out from thy bowels, he doth heir thee;'

⁵  and He bringeth him out without, and saith, 'Look attentively, I pray thee, towards the heavens, and count the stars, if thou art able to count them;' and He saith to him, 'Thus is thy seed.'

⁶  And he hath believed in Jehovah, and He reckoneth it to him -- righteousness.