Genesis 26:4-6

4I will make your descendants as numerous as the stars in the sky and will give them all these lands, and through your offspring Or seed all nations on earth will be blessed, Or and all nations on earth will use the name of your offspring in blessings (see 48:20) 5because Abraham obeyed me and did everything I required of him, keeping my commands, my decrees and my instructions.”

6So Isaac stayed in Gerar.