In the beginning of this week’s parsha, Parshas Chayei Sara, Sarah Imainu dies at the age of 127 years old, וַתָּ֣מָת שָׂרָ֗ה בְּקִרְיַ֥ת אַרְבַּ֛ע הִ֥וא חֶבְר֖וֹן בְּאֶ֣רֶץ כְּנָ֑עַן וַיָּבֹא֙ אַבְרָהָ֔ם לִסְפֹּ֥ד לְשָׂרָ֖ה וְלִבְכֹּתָֽהּ, and Sarah died in Kiryas Arba, which is Chevron, in the land...

In this week’s parsha, Parshas Vayeira, Avraham and Sarah’s long awaited son, Yitzchak, is born.  At the age of 100 and 90, Avraham and Sarah, respectively, become parents together.  וַה’ פָּקַד אֶת-שָׂרָה, כַּאֲשֶׁר אָמָר; וַיַּעַשׂ ה’ לְשָׂרָה, כַּאֲשֶׁר דִּבֵּר - And Hashem remembered Sarah as He...