B”H
As noted in a previous discussion, Avraham was born in the year 1948 and that Hashem commanded Avraham, “Lech Lecha” when he was 75, in the year 2023. In the year 2047, when Avraham was 99, Hashem gave him the Mitzvah of Brit Milah (circumcision), and a year later, in the year 2048, when he was 100, his son Yitzhak was born.
100 represents the fixing each of the 10 attributes within each 10 subdivisions. We as a people have much to fix, but also much to look forward to.