Raphael (UK: /ˈræfeɪəl/ RAF-ay-əl, US: /ˈræfiəl, ˈreɪf-/ RA(Y)F-ee-əl; "God has healed") is an archangel first mentioned in the Book of Tobit and in 1 Enoch, both estimated to date from between the 3rd and 2nd century BC. In later Jewish tradition, he became identified as one of the three heavenly visitors entertained by Abraham at the Oak of Mamre. He is not named in either the New Testament or the Quran, but later Christian tradition identified him with healing and as the angel who stirred waters in the Pool of Bethesda in John 5:2–4, and in Islam, where his name is Israfil, he is understood to be the unnamed angel of Quran 6:73, standing eternally with a trumpet to his lips, ready to announce the Day of Judgment. In Gnostic tradition, Raphael is represented on the Ophite Diagram.

In the Hebrew Bible, the word 'מַלְאָךְ' (malʾāk̠) means messenger or representative; either human or supernatural in nature. When used in the latter sense it is translated as "angel". The original mal'akh lacked both individuality and hierarchy, but after the Babylonian exile they were graded into a Babylonian-style hierarchy and the word archangelos, archangel, first appears in the Greek text of 1 Enoch. At the same time the angels and archangels began to be given names, as attested in the Talmudic statement that "the names of the angels were brought by the Jews from Babylonia", attributed to Shimon ben Lakish or Rabbi Hanina respectively.

Raphael first appears in two works of this period, 1 Enoch, a collection of originally independent texts from the 3rd century BC, and the Book of Tobit, from the early 2nd century BC. In the oldest stratum of 1 Enoch (1 Enoch 9:1) he is one of the four named archangels, and in Tobit 12:11–15 he is one of seven.

His name derives from the Hebrew root רפא (r-p-ʾ) meaning "to heal", and can be translated as "God has healed". In Tobit he goes by the name Azariah (Hebrew: עֲזַרְיָה/עֲזַרְיָהוּ ʿĂzaryāh/ʿĂzaryāhū, "Yah/Yahu has helped") while disguising himself as a human. In the text he acts as a physician and expels demons, using an extraordinary fish to bind the demon Asmodeus and to heal Tobit's eyes, while in 1 Enoch he is "set over all disease and every wound of the children of the people", and binds the armies of Azazel and throws them into the valley of fire.

According to the Babylonian Talmud, Raphael (Hebrew: רְפָאֵל Rəfāʾēl, Tiberian: Răp̄āʾēl) was one of the three angels who appeared to Abraham in the oak grove of Mamre in the region of Hebron (Genesis 18; Bava Metzia 86b); Michael, as the greatest, walked in the middle, with Gabriel to his right, and Raphael to his left (Yoma 37a). Each was commanded to carry out a specific mission, Gabriel to destroy Sodom, Michael to inform Sarah that she would give birth to Isaac, Raphael to heal Abraham from his recent circumcision and save Lot. Rashi writes, "Although Raphael's mission included two tasks, they were considered a single mission since they were both acts that saved people." The Life of Adam and Eve lists him with the archangels Michael, Gabriel, Uriel, and Joel, and the medieval Jewish philosopher Maimonides included his name in his Jewish angelic hierarchy.

In Midrash Konen, it is revealed that Raphael was originally once named Libbiel (Hebrew: לִבִּיאֵל Lībbīʾēl; Meaning: "God is my heart"). In the Midrash, God takes council with His Angels before he creates Adam the first Man. The Angels were not all of one opinion however, with differing views and reasons. The Angel of Love and Angel of Justice both favoured Man's creation as he would be affectionate and loving, alongside practicing Justice. The Angel of Truth and the Angel of Peace opposed his creation however, as he would be full of lies and be quarrelsome. To invalidate his protest, God cast the Angel of Truth down from Heaven to Earth, and when the others cried out against the treatment of their companion, He said, "Truth will spring back out of the earth." Before their objections, God had only told the Angels of the good there would be among Humans, but not of the evil too. Despite not knowing the whole truth, the Angels were nevertheless prompted to cry out: "What is man, that Thou art mindful of him? And the son of man, that Thou visitest him?" God replied: "The fowl of the air and the fish of the sea, what were they created for? Of what avail a larder full of appetizing dainties, and no guest to enjoy them?" And the Angels could not but exclaim: "O Lord, our Lord, how excellent is Thy name in all the earth! Do as is pleasing in Thy sight." For not a few of the Angels their opposition bore fatal consequences. When God summoned the band under the Archangel Michael, and asked their opinion on the creation of man, they answered scornfully: "What is man, that Thou art mindful of him? And the son of man, that Thou visitest him?" God thereupon stretched forth His little finger, and all were consumed by fire except their Chief Michael. And the same fate befell the band under the leadership of the Archangel Gabriel; he alone of all was saved from destruction. The third band consulted was commanded by the Archangel Libbiel. Taught by the horrible fate of his predecessors, he warned his troop: "You have seen what misfortune overtook the Angels who said 'What is man, that Thou art mindful of him?' Let us have a care not to do likewise, lest we suffer the same dire punishment. For God will not refrain from doing in the end what He has planned. Therefore it is advisable for us to yield to His wishes." Thus warned, the Angels spoke: "Lord of the world, it is well that Thou hast thought of creating man. Do Thou create him according to Thy will. And as for us, we will be his attendants and his ministers, and reveal unto him all our secrets." Thereupon God changed the Archangel Libbiel's name to Raphael, the Rescuer, because his Host of Angels had been rescued by his sage advice. He was appointed the Angelic Prince of Healing, who has in his safe-keeping all the celestial remedies, the types of the medical remedies used on Earth.

In the Midrash Tanhuma, Satan becomes envious of the righteous R. Matthew bar Heresh after seeing him sitting occupied in Torah study, without looking at anyone's wife or any other woman. Believing it to be impossible for a righteous man to exist in the world without sin, Satan asks God how He views Rabbi Matthew; He sees him as completely righteous. Satan then asks for permission to test R. Matthew, which is granted to him. Satan then takes the form of a beautiful woman upon finding the Rabbi studying Torah. After seeing that Satan would continue to try and tempt him from all sides; he used hot pins to blind himself lest his evil inclination prevail. Satan then trembled in dismay and reported back to God. Immediately upon hearing this, God called Raphael, Prince of the Healing Arts, commanding him to heal the eyes of R. Matthew bar Heresh. When Raphael goes to R. Matthew and reveals his identity and mission, the Rabbi states that he does not wish to be healed. Raphael then returns to God informing Him of this. Upon hearing this God commands Raphael to tell the Rabbi not to fear, for his evil inclination will not prevail. When he heard this from the mouth of the angel, he accepted his healing and was not afraid.

In Rabbeinu Bahya, a commentary on the Torah written by Rabbi Bahya ben Asher (1255–1340), the Camp of Ephraim, situated to the west of the Tabernacle (Numbers 2:18), corresponded to the celestial camp headed by the archangel Raphael supported by the angels Zavdiel and Achziel. It is also said that this was the camp that Moses alluded to when he prayed that Miriam be healed from her tzaraath by saying "please God heal her" (Numbers 12:13). He appealed to the attribute represented by Raphael.