When Jacob sees them coming, he, Israel, strengthens himself and sits up in bed. The first thing he does is repeats the Abrahamic Covenant to Joseph and his sons in verses 3 and 4:
Then Jacob said to Joseph: “God Almighty appeared to me at Luz in the land of Canaan and blessed me, and said to me, ‘Behold, I will make you fruitful and multiply you, and I will make of you a multitude of people, and give this land to your descendants after you as an everlasting possession.’
God Almighty - El Shaddai - shows up once again in the context of fruitfulness and multiplication.
Next Jacob does something astounding. Look at verse 5:
And now your two sons, Ephraim and Manasseh, who were born to you in the land of Egypt before I came to you in Egypt, are mine; as Reuben and Simeon, they shall be mine.
“God, before whom my fathers Abraham and Isaac walked,
The God who has fed me all my life long to this day,
The Angel who has redeemed me from all evil,
Bless the lads;
Let my name be named upon them,
And the name of my fathers Abraham and Isaac;
And let them grow into a multitude in the midst of the earth.”
But his father refused and said, “I know, my son, I know. He also shall become a people, and he also shall be great; but truly his younger brother shall be greater than he, and his descendants shall become a multitude of nations.”
Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ, just as He chose us in Him before the foundation of the world, that we should be holy and without blame before Him in love, having predestined us to adoption as sons by Jesus Christ to Himself, according to the good pleasure of His will.
Ezekiel 16 goes on to describe the harlotry of Jerusalem (it isn't pretty) but then her ultimate redemption because of God's everlasting covenant.
Then Israel said to Joseph, “Behold, I am dying, but God will be with you and bring you back to the land of your fathers.