מאירי על שבועות ל״ט א:ד׳
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שבועות ל״ט א:ט׳
Having quoted a verse, the baraita tangentially interprets the subsequent verse. From the phrase: “But with he who stands here with us this day” (Deuteronomy 29:14), I have derived only that those who stood at Mount Sinai were included in this covenant. From where do I derive that the subsequent generations, and the converts who will convert in the future, were also included? The verse states: “And also with he who is not here with us this day” (Deuteronomy 29:14).
חידושי אגדות על מסכת שבועות ל״ט א:ו׳
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שבת קמ״ו א:א׳
the snake came upon Eve, i.e., when it seduced her to eat from the Tree of Knowledge, it infected her with moral contamination, and this contamination remained in all human beings. When the Jewish people stood at Mount Sinai, their contamination ceased, whereas gentiles did not stand at Mount Sinai, and their contamination never ceased. Rav Aḥa, the son of Rava, said to Rav Ashi: What about converts? How do you explain the cessation of their moral contamination? Rav Ashi said to him: Even though they themselves were not at Mount Sinai, their guardian angels were present, as it is written: “It is not with you alone that I make this covenant and this oath, but with he that stands here with us today before the Lord our God, and with he that is not here with us today” (Deuteronomy 29:13–14), and this includes converts.