Abraham’s seed was physical. God promised that Abraham would be a father of many nations (Gen. 17:5). Nations arose from his offspring with Hagar and Keturah, but the seed of promise was Isaac, the son of Sarah. From Isaac came Jacob and then the nation of Israel. The development of this physical seed was essential to the coming of Christ, for He was in the line of Abraham. It was from Israel that Christ came “according to the flesh” (Rom. 9:4–5). There had to be a physical seed if there was going to be God’s Christ.