Bereshit – The Three Angels Visit Avraham
Genesis 18:2
Three angels appear to Avraham; the Talmud (Bava Metzia 86b) and Rashi identify one of them as Refael, whose mission was to heal Avraham after his circumcision — this is the primary biblical source for the angel Refael as healer.
וַיִּשָּׂ֤א עֵינָיו֙ וַיַּ֔רְא וְהִנֵּה֙ שְׁלֹשָׁ֣ה אֲנָשִׁ֔ים נִצָּבִ֖ים עָלָ֑יו וַיַּ֗רְא וַיָּ֤רׇץ לִקְרָאתָם֙ מִפֶּ֣תַח הָאֹ֔הֶל וַיִּשְׁתַּ֖חוּ אָֽרְצָה׃
Looking up, he saw three figures standing near him. As soon as he saw them, he ran from the entrance of the tent to greet them and, bowing to the ground,
Why it matters — The angel Refael's first and most prominent biblical appearance, establishing the association of the name with healing (refu'ah).