At Isaac generation no new items are added to Abraham's Covenant. It is, though confirmed as having passed to him.
Confirmed to Isaac
God did not stop at Abraham. The next generation was told the same thing. This time, though, since the covenant was set, there was no need to execute a new covenant. All that remained was reassurance for the people involved that God had a great thing planned.
We see this in Isaac's life in Genesis chapter 26. The following is the relevant text:
1Now there was a famine in the land -- besides the earlier famine of Abraham's time -- and Isaac went to Abimelech king of the Philistines in Gerar. 2The LORD appeared to Isaac and said, "Do not go down to Egypt; live in the land where I tell you to live. 3Stay in this land for a while, and I will be with you and will bless you. For to you and your descendants I will give all these lands and will confirm the oath I swore to your father Abraham. 4I will make your descendants as numerous as the stars in the sky and will give them all these lands, and through your offspring all nations on earth will be blessed, 5because Abraham obeyed me and kept my requirements, my commands, my decrees and my laws." 6So Isaac stayed in Gerar. (Genesis 26:1-6 NIV)
1And 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. 2And the Lord appeared unto him, and said, Go not down into Egypt; dwell in the land which I shall tell thee of: 3Sojourn 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; 4And 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; 5Because that Abraham obeyed my voice, and kept my charge, my commandments, my statutes, and my laws.
6¶And Isaac dwelt in Gerar: (Genesis 26:1-6 KJV)
1There was a famine in the landFJ
besides the first famine that was in the days of Abrahamand Isaac went to Abimelek king of the Philistines to Gadar. 2Yahvah appeared to him and said, Do not go down to Mizraim. Live in the land which I will tell you. 3Reside temporarily in this land and I will be with you and will bless you. For to you and to your seed I will give all these kingdoms. I will perform the oath which I swore to Abraham your father. 4I will make your seed to multiply as the stars of the skies and will give to your seed all these lands and by your seed all the peoples of the land will be blessed, 5because Abraham obeyed my voice and preservedFS my charge my commandments my statutes andmy laws. 6Isaac lived in Gadar. (Genesis 26:1-6 BRB)
Each of the main components of Abraham's covenant are repeated here again. Isaac will now be blessed. Isaac, together with his dependents will receive the land. Isaac will have numerous offspring, as numerous as the stars in the sky. Finally, through his offspring, all nations on earth will be blessed.
The nature of the covenant being made with Abraham, not with Isaac, is reiterated. Isaac is not required to do anything. Because of the covenant that God made with Abraham it is sure to happen. It will happen as surely as God exists. This has less requirement placed on Isaac than even the New Covenant. Isaac does not even need to believe that this will happen, it still will. Those of us, under the New Covenant, are required to believe.
The next generation, Jacob, has the same thing happen. We now turn there.
1. Genesis 26:3
2. Genesis 26:3
3. Genesis 26:4
4. Genesis 26:4
5. Genesis 26:5