Angels-URIM

Friedrich Klopstock, in his poetic drama The Messiah (Der Messias),
identifies Urim as a cherub. This use of Urim as the name of an angel
is unusual. The name means “illumination” and is used in the Bible to
denote a household idol. It is usually adopted in association with the
term tummin, “perfection,” referring to oracles for ascertaining the will
of God. This association derives from the Babylonian-Chaldean
(Mesopotamian) “tablets of destiny,” which were believed to possess
the virtue of casting the fate of men.
It is also believed that the urim and tummin engraved on Aaron’s
breastplate represented the insignia of his office of high priest.
According to Talmud Yoma, the urim and tummin are among the five
holy things found in the First Temple and absent from the Second
Temple. They are also cited in the Zohar, as well as in Milton’s Paradise
Regained III, as “those oraculous gems / On Aaron’s breast.”