Genesis 48:1-7: Praying in faith.

“Some time later Joseph was told, ‘Your father is ill.’ So he took his two sons Manasseh and Ephraim along with him. When Jacob was told, ‘Your son Joseph has come to you,’ Israel rallied his strength and sat up on the bed.Jacob said to Joseph, ‘God Almighty appeared to me at Luz in the land of Canaan, and there he blessed me and said to me, “I am going to make you fruitful and increase your numbers. I will make you a community of peoples, and I will give this land as an everlasting possession to your descendants after you.”‘Now then, your two sons born to you in Egypt before I came to you here will be reckoned as mine; Ephraim and Manasseh will be mine, just as Reuben and Simeon are mine. Any children born to you after them will be yours; in the territory they inherit they will be reckoned under the names of their brothers. As I was returning from Paddan,[b] to my sorrow Rachel died in the land of Canaan while we were still on the way, a little distance from Ephrath. So I buried her there beside the road to Ephrath’ (that is, Bethlehem).NIV

When it came to blessing Joseph’s two sons, Jacob appealed to what God had already said to him (4).

‘God had promised him two things, a numerous issue, and Canaan for an inheritance (Gen. 48:4); and Joseph’s sons, pursuant hereunto, should each of them multiply into a tribe, and each of them have a distinct lot in Canaan, equal with Jacob’s own sons. See how he blessed them by faith in that which God had said to him, Heb. 11:21. Note, In all our prayers, both for ourselves and for our children, we ought to have a particular eye to, and remembrance of, God’s promises to us.’ Matthew Henry.

These boys were now not to see themselves as heirs to worldly power and wealth in Egypt, but as members of the despised, but divinely chosen people of God (cf. Hebrews 11: 25,26).