So last year I did my post on Ephraim and the Fullness of The Gentiles. I stand by that in terms of my rejecting Two House Theology. The Church is part of Israel but not one specific Tribe. Ephraim's role in Bible Prophecy is in Revelation 16 in the 6th Bowl.
But I'm more understanding now of the argument that Ephraim becoming "a Multitude of Nations" should be translated "the Fullness of the Gentiles".
Here is what people are missing in terms of connecting Genesis 48 to Romans 9-11. If Ephraim became the "Fullness" of the Gentiles. And if ALL Israel will be Saved. Then logically Everyone will be Saved.
Hence more proof of Unviersalism.