Job 38:7

When the morning stars sing together— It is observable from many passages in the prophets, that the angels are compared to, or spoken of, under the metaphor of stars: See particularly Isaiah 14:12. The beauty and propriety of these allusions of the prophets will appear with greater lustre, when it is considered that the hosts of heaven were the objects of heathen idolatry; both the visible and invisible host, as well the angels as the light of heaven; for the superstition seems to have been originally the same, as the worship of the heavenly bodies terminated in the worship of those angels or intelligences who were believed to animate or conduct them; and hence we see a reason why the angels are called stars, and morning stars in Scripture. Peters.