Gal 3:16, Gen 22:17-18,
God also blessed Isaac to take possession of Canaan, the land where Christ would come. (Gen. 26:2-4)
Gen. 26:2 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;
God promised Abraham that through his descendants he would gain the gates of the enemy and that all nations would be blessed. (Gen 22:17-18)
Gen 22:17 That in blessing I will bless thee, and in multiplying I will multiply thy seed as the stars of the heaven, and as the sand which is upon the sea shore; and thy seed shall possess the gate of his enemies; 18 And in thy seed shall all the nations of the earth be blessed; because thou hast obeyed my voice.
The offspring that God promised to Abraham and Isaac is Christ. (Gal 3:16)
Gal 3:16 Now to Abraham and his seed were the promises made. He saith not, And to seeds, as of many; but as of one, And to thy seed, which is Christ.