וְאַתָּ֣ה אָמַ֔רְתָּ הֵיטֵ֥ב אֵיטִ֖יב עִמָּ֑ךְ וְשַׂמְתִּ֤י אֶֽת־זַרְעֲךָ֙ כְּח֣וֹל הַיָּ֔ם אֲשֶׁ֥ר לֹא־יִסָּפֵ֖ר מֵרֹֽב׃
At ikaw ang nagsabi: ‘Tiyak na gagawan kita ng mabuti, at gagawin kong gaya ng buhangin sa dagat ang iyong lahi, na hindi mabilang dahil sa dami.’”
Shenei Luchot HaBerit
You have said: "I will do good good with you." The word הטיב refers to the good G–d would do with Jacob on earth, whereas the word אטיב referred to the good G–d would do for Jacob in the "higher" world.