[fortheDeclaration]

I assume we are all familiar with the fact that the tribes of Dan and Ephraim which received an alottment of the promised land by Joshua, do not appear in the list of twelve tribes in Revelation 6 - the 144,000 Israelites sealed for God

Yes, that is because of their role in introducing idol worship into Israel (Judges 17-18)

Yes, those tribes are restored in the Millennial reign.

[Zack Attack]

12,000 from the tribe of Joseph
12,000 from the tribe of Manasseh

One might ask since Joseph had 2 sons, Ephraim and Manasseh, and Manasseh is listed having 12,000, just who is included in the 12,000 of Joseph in Revelation 7 if it is not Ephraim?

Just an observation.