Sandalphon (Hebrew: סָנְדַלְפוֹן; Greek: Σανδαλφών) is an archangel in Jewish and Christian writings. Sandalphon figures prominently in the mystical literary traditions of Rabbinic Judaism and early Christianity, notably in the Midrash, Talmud, and Kabbalah.
Though not explicitly referenced in scripture, some of the earliest sources on Sandalphon refer to him as the prophet Elijah transfigured and elevated to angelic status. Other sources (mainly from the midrashic period) describe him as the "twin brother" of Metatron, whose human origin as Enoch was similar to the human origin of Sandalphon.
The name Sandalphon, the protector of unborn children, is possibly derived from the Greek prefix sym-/syn-, meaning "together", and adelphos, meaning "brother"; thus approximately meaning "co-brother", since the modern Greek word for "co-worker", synadelfos (συνάδελφος), has these roots as seen in the Book of Revelation, chapter 19, verse 10. This probably refers to Sandalphon's relationship to Metatron, though this derivation shows uncertain Semitic influences.
Physical descriptions of Sandalphon vary depending on the source. He is uniformly depicted as extremely tall—he exceeds Hadraniel (another angel) in height by a 500-year foot journey. During Moses' visit to the Third Heaven, he is said to have glimpsed Sandalphon and called him the "tall angel" (though this legend dates to much later than the time of the Torah). The Babylonian Talmud Hagigah 13b says Sandalphon's head reaches Heaven, which is also said of Israfil and of the Greek monster Typhon, with whom Sandalphon seems to have similar mythological roots. He is also described as being a member of the Sarim (angelic princes), and a Hazzan (master of heavenly song).