'Host of Heaven' in the Bible

Then Micaiah said, "Therefore hear the word of Yahweh: I saw Yahweh sitting upon his throne with all the host of heaven standing on his right and on his left.

And {he rebuilt} the high places that Hezekiah his father broke down, and he set up altars for the Baals, made Asherahs, and bowed down to the host of heaven and served them.

And he built altars to all the host of heaven in the two courtyards of the house of Yahweh.