There is a lot of odd teachings about Ephraim out there. They all center around this group or that group or Christians in general being Ephraim. Why would anyone of Gentile decent want to be of Israel. They are under God’s judgment. Is it not enough to be adopted into the Family of God? His love is for the individual who will follow Him, not some group that must have the right parentage.
With weeping they shall come, and with consolations I will lead them back, I will make them walk by brooks of water, in a straight path in which they shall not stumble; for I am a father to Israel, and Ephraim is my first-born. Jer. 31:9
The tribe of Ephraim had gone astray from God, was no more worthy to be called a son, a first-born son and as such is to be given the double portion.
The same reason that was given for their release out of Egypt is given for their release out of Babylon; they are free-born and therefore must not be enslaved. They are born to God and therefore must not be the servants of men.
However the odd thing here is that Ephraim was not taken by Babylon but rather Assyria. They were relocated with the rest of the Ten Northern Tribes in Persia, now called Iran. (See Also: The Ten Lost Tribes)
In pure birth order Ephraim is the last born of the tribes, as he is Joseph’s second son.
The name of the second he called Ephraim, “For God has made me fruitful in the land of my affliction.” Gen. 41:52
At the time of the blessing of the tribes Judah/Israel gives Ephraim the blessing of the firstborn.
13 And Joseph took them both, Ephraim in his right hand toward Israel’s left hand, and Manasseh in his left hand toward Israel’s right hand, and brought them near him. 14 And Israel stretched out his right hand and laid it upon the head of Ephraim, who was the younger, and his left hand upon the head of Manasseh, crossing his hands, for Manasseh was the first-born. Gen. 48:13-14
So he blessed them that day, saying, “By you Israel will pronounce blessings, saying, ‘God make you as Ephraim and as Manasseh”; and thus he put Ephraim before Manasseh. Gen. 48:20