1 And there was a famine in the land, beside the first famine that was in the days of Abraham. And Isaac went unto Abimelech king of the Philistines unto Gerar. 2 And the Lord appeared unto him, and said, Go not down into Egypt; dwell in the land which I shall tell thee of: 3 Sojourn in this land, and I will be with thee, and will bless thee; for unto thee, and unto thy seed, I will give all these countries, and I will perform the oath which I sware unto Abraham thy father; 4 And I will make thy seed to multiply as the stars of heaven, and will give unto thy seed all these countries; and in thy seed shall all the nations of the earth be blessed; 5 Because that Abraham obeyed my voice, and kept my charge, my commandments, my statutes, and my laws.
A famine occurred, much as it did for Abraham. Isaac had to set out from his home, much as did Abraham. He was led to the land of the Philistines, much as was Abraham. And along his way God promised him innumerable descendants and a great land for an inheritance, much as He had to Abraham.
But while Isaac’s story may heavily mirror Abraham’s in some parts, he still was not Abraham and he had his own, individual walk with God. That walk meant continuing the path that his father started, but he was covering new ground along his way. Some of the differences between his path and Abraham’s are how the matter of having posterity was resolved much more quickly for Isaac, he was not asked to sacrifice his son, and he was already well on his way to wealth from what he had inherited.
Many things appear to have been easier for Isaac than they were for Abraham, and perhaps that is why so little of his story is recorded in the Bible. He is the main character only for the rest of this chapter, and then the focus will shift to Jacob, his son. Isaac served his purpose of continuing the line and the promise, but greater advancement in the face of adversity would come during the next generation.