Biblical Cosmology: The Firmament
The ancient Israelites believed that the firmament or the sky is like a strong cast metal mirror and all the stars are within the firmament. God, however, gave them a promise that challenges their view. As God said, if they can measure the heaven above He too will cast off all the seed of Israel. Even in this modern era, humans were never able to measure the heaven and God never cast off the seed of Israel as He promised.