בְּפָ֘רֵ֤שׂ שַׁדַּ֓י מְלָ֘כִ֤ים בָּ֗הּ תַּשְׁלֵ֥ג בְּצַלְמֽוֹן׃
Quand le Tout-Puissant dispersa les rois, le Çalmon était couvert de neige."
Rabbeinu Bahya
In Bereshit Rabbah 21,14 we find that Rabbi Abba interprets the words (Genesis 3,24 ) את החרב המתהפכת, as a reference to circumcision. He explains his reason as being Joshua 5,2 where the instruments used to circumcise the people are described as חרבות צורים “swords of flint.” The other Rabbis consider the word חרב in that verse in Genesis 3,24 as referring to the Torah. They point to Psalms 149,6 וחרב פפיות בידם, “and a two-edged sword in their hands,” as their reason. Rabbi Abdimai also interprets the entire verse there as connected to both Gehinom and circumcision; he considers circumcision as an insurance against a Jew becoming a permanent victim of Gehinom. G-d is portrayed as asking; “who will save My children from the blazing fire (in Gehinom)? The answer given is that the rite of circumcision will be the instrument saving Jews from Gehinom and its fires.