But thou didst say, ‘I will do you good…’: for the quote see verse 9. The Hebrew translated But thou is emphatic and carries the plea that God will not forget the promise he made, but act on it. Note Good News Translation “Remember that…”; some other translations say at the beginning or the end of the verse “Please don’t forget your promise.”

Your descendants as sand of the sea, which cannot be numbered for multitude: for the comparison of numerous descendants with sand see 22.17. For which … multitude see 16.10.

Quoted with permission from Reyburn, William D. and Fry, Euan McG. A Handbook on Genesis. (UBS Helps for Translators). New York: UBS, 1997. For this and other handbooks for translators see here .