noun
works of the gods; divine work
Archaic honorific term for the deeds or creations of gods. Used in classical or religious contexts.
古事記には神々の御業が記されている。
The Kojiki records the works of the gods.
神業 is a more common modern term for 'divine work' or 'superhuman feat', while 御業 is archaic and honorific.
Compound of 御 (mi, honorific prefix) + 業 (waza, work, deed). The exact historical derivation is uncertain, but it follows a common pattern for honorific terms in classical Japanese.