In the midst of this wide-spread apostasy one man was found whose heart was faithful with God. Abraham was chosen from an idolatrous family, as the depositary of divine truth, the father of the faithful, the heir of the world, and the friend of God.[53] When the worshipers of God were found alone in the family of Noah, God gave up the rest of mankind to perish in the flood. Now that the worshipers of God are again reduced almost to a single family, God gives up the idolatrous nations to their own ways, and takes the family of Abraham as his peculiar heritage. “For I know him,” said God, “that he will command his children and his household after him, and they shall keep the way of the Lord, to do justice and judgment.”[54] That they might preserve in the earth the knowledge of divine truth and the memory and worship of the Most High, they were to be a people walled off from all mankind, and dwelling in a land of their own. That they might thus be separated from the heathen around, God gave to Abraham the rite of circumcision, and afterward to his posterity the whole ceremonial law.[55] But they could not possess the land designed for them until the iniquity of the Amorites, its inhabitants, was full, that they should be thrust out before them. The horror of great darkness, and the smoking furnace seen by Abraham in vision, foreshadowed the iron furnace and the bitter servitude of Egypt. The family of Abraham must go down thither. Brief prosperity and long and terrible oppression follow.[56]