Genesis 48:6

6 Your issue, who you become the father of after them, will be yours. They will be called after the name of their brothers in their inheritance.

Genesis 48:6 Meaning and Commentary

Genesis 48:6

And thy issue, which thou begettest after them, shall be
thine
The children of Joseph, that either were, or would be begotten after Ephraim and Manasseh; though whether ever any were is not certain; and this is only mentioned by way of supposition, as Jarchi interprets it, "if thou shouldest beget" these should be reckoned his own, and not as Jacob's sons, but be considered as other grandchildren of Jacob's were, and not as Ephraim and Manasseh: [and] shall be called after the name of their brethren in their
inheritance;
they should not have distinct names, or make distinct tribes, or have a distinct inheritance; but should be called either the children of Ephraim, or the children of Manasseh, and should be reckoned as belonging either to the one tribe, or the other, and have their inheritance in them, and with them, and not separate.

Genesis 48:6 In-Context

4 and said to me, 'Behold, I will make you fruitful, and multiply you, and I will make of you a company of peoples, and will give this land to your seed after you for an everlasting possession.'
5 Now your two sons, who were born to you in the land of Mitzrayim before I came to you into Mitzrayim, are mine; Efrayim and Menashsheh, even as Re'uven and Shim`on, will be mine.
6 Your issue, who you become the father of after them, will be yours. They will be called after the name of their brothers in their inheritance.
7 As for me, when I came from Paddan, Rachel died by me in the land of Kana`an in the way, when there was still some distance to come to Efrat, and I buried her there in the way to Efrat (the same is Beit-Lechem)."
8 Yisra'el saw Yosef's sons, and said, "Who are these?"
The Hebrew Names Version is in the public domain.