Is it ensure, insure, or assure?
1382, in the Wyclif Bible, a word taken untranslated from the Vulgate, from Greek ariel (Sept.), from Hebrew ariel; in later Bibles, translated as "altar."
(Gesenius would here translate "fire-hearth of God," after Arab. arr; elsewhere in O.T. the same word occurs as a man's name, and appellation of Jerusalem, where it is taken as = "lion of God.") Ariel in T. Heywood and Milton is the name of an angel, in Shakespeare of "an Ayrie spirit"; in Astron. of one of the satellites of Uranus. [OED]As the name of a species of gazelle found in the Middle East, 1832, from Arabic aryil, variant of ayyil "stag."
the lion of God. (1.) One of the chief men sent by Ezra to procure Levites for the sanctuary (Ezra 8:16). (2.) A symbolic name for Jerusalem (Isa. 29:1, 2, 7) as "victorious under God," and in Ezek. 43:15, 16, for the altar (marg., Heb. 'ariel) of burnt offerings, the secret of Israel's lion-like strength.