Over a period of four hundred years, since their first move to Egypt, Jacob’s sons (Abraham’s descendents) grew from a large family into a massive people group. Indeed, so much so that Egypt’s king at the time began to perceive this fast-expanding racial minority as a real threat to his kingdom. To stamp out the potential danger, Pharaoh reduced the Israelites to slavery. The ultimately satanic nature of this oppression was clearly manifested when Pharaoh ordered that all the male babies be taken from their mothers and killed (this occurs once again later at the time of Christ’s birth under Herod). Very significantly, however, we note that on both of these occasions, God protected the birth of the chosen deliverer.
When Moses was a grown man, God called him to lead his people out from under the yoke of Egyptian slavery. In a series of amazing incidents, ten plagues brought God’s judgment upon the Egyptian gods (each plague an intentional provocation and defiance of Egypt’s so-called gods). Eventually, the Israelites were enabled to leave Egypt and travel through the wilderness toward Mount Sinai. God miraculously parted the Red Sea for them, allowing nearly three million people to walk across the dry ocean bed. Soon, the Egyptians decided to chase after the Israelites, but God caused the ocean to close in upon them, drowning the entire army.
With this deliverance behind them, God made a covenant with Israel, and set them apart as a priestly nation, chosen to mediate God’s promised blessing to the nations. This then, leads to the next covenant in the biblical story: the Mosaic covenant; bringing us another step closer to the Saviour first promised in Gen 3:15. Where the Noahic covenant promised to preserve a humanity from whom the Saviour would come, and the Abrahamic covenant narrowed this promise down from that of humanity to a specific race (seed of Abraham); now, in the Mosaic covenant, God was promising to set apart a specific nationality from among Abraham’s descendants. In this way, we see how God’s plan of redemption was continuing to unfold. The lineage that led to the promised Messiah was becoming more and more specific.