Sforno on Leviticus 26:45/ספורנו על ויקרא כ״ו:מ״ה

1וזכרתי להם, during the ingathering of the exiles. אשר הוצאתי...להיות להם לאלוקים, the principal reason I redeemed them from Egypt was to become their exclusive G’d, as we know from Exodus 19,6 ואתם תהיו לי ממלכת כהנים וגוי קדוש, “you are to become for me a Kingdom of priests, a holy nation.” The corruption you have become guilty of since will be reversed in the days of the Messiah and the world to come.

2'אני ה, “I have not changed; any deterioration in the Jewish people’s condition is completely the result of their own doing. I will eventually successfully complete My plan, something that I have had in mind since time immemorial, but I have never revealed My timetable.”