וְאַחַ֣ר ע֭וֹרִֽי נִקְּפוּ־זֹ֑את וּ֝מִבְּשָׂרִ֗י אֶֽחֱזֶ֥ה אֱלֽוֹהַּ׃
나의 이 가죽, 이것이 썩은 후에 내가 육체 밖에서 하나님을 보리라
Bereshit Rabbah
“After my skin, this was struck [nikfu], and from my flesh I will view God” (Job 19:26) – Abraham said: After I circumcised myself, many proselytes came to attach themselves2Nikfu is related to mukaf, meaning attached to. to this covenant. “And from my flesh I will view God” – had I not done this, on what basis would the Holy One blessed be He have appeared to me? “The Lord appeared to him.”