Ibn Ezra on Genesis 17:16/אבן עזרא על בראשית י״ז:ט״ז

1AND MOREOVER I WILL GIVE THEE. Natati (I will give thee) in our verse is like natati in I will give (natati) the price of the field (Gen. 23:13). Observe, although both are perfects, they are to be rendered as imperfects.