Blessings upon Isaac Genesis 26:2-4
2 And the LORD appeared unto him, and said, Go not down into Egypt; dwell in the land which I shall tell thee of:26:3 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; 26:4 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;
The blessings of Jacob from God through the angel
32 :23 And he took them, and sent them over the brook, and sent over that he had.32 :24 And Jacob was left alone; and there wrestled a man with him until the breaking of the day.32 :25 And when he saw that he prevailed not against him, he touched the hollow of his thigh; and the hollow of Jacob’s thigh was out of joint, as he wrestled with him.32 :26 And he said, Let me go, for the day breaketh. And he said, I will not let thee go, except thou bless me.32 :27 And he said unto him, What is thy name? And he said, Jacob.32 :28 And he said, Thy name shall be called no more Jacob, but Israel: for as a prince hast thou power with God and with men, and hast prevailed.
The blessings of God upon Jacob through Isaac his father
26 And his father Isaac said unto him, Come near now, and kiss me, my son.27 :27 And he came near, and kissed him: and he smelled the smell of his raiment, and blessed him, and said, See, the smell of my son is as the smell of a field which the LORD hath blessed: 27:28 Therefore God give thee of the dew of heaven, and the fatness of the earth, and plenty of corn and wine: 27:29 Let people serve thee, “and nations” bow down to thee: be lord over thy brethren, and let thy mother’s sons bow down to thee: cursed be every one that curseth thee, and blessed be he that blesseth thee.
You can see that in all these blessings upon Abraham, Isaac and Jacob, there is the “many nations”
These nations are what Jesus Christ incorporated to Israel both for Jews believers and Gentiles believers in Jesus Christ in the book of Revelation chapter 21:1-27.Which means that every believers in Jesus Christ is and Israeli, because the present Israel can never be many nations.
