Garee,
I read again, and will post here, at least the main verses that you referred to earlier.
Isa 28:11 For with stammering lips and another tongue will he speak to this people.
Isa 28:12 To whom he said, This is the rest wherewith ye may cause the weary to rest; and this is the refreshing: yet they would not hear.
It is recommended that anyone reading this also read the verses around 11&12 if for no other reason than re-familiarization. It is good to read the word of God pretty much any time it's mentioned.
I can see where you draw the conclusion that the people about which he is speaking are rebellious....especially where it concludes with "yet they would not hear". And it kinda makes sense that you reach the conclusion you reached.
What I would ask is that you consider a different viewpoint. (And compare it with what happens in Acts 2 to see if it fits).
Notice in Isaiah 28:11 WHO God said would be speaking?
And please consider what it means in 28:11 if God was speaking
IN one person/group but
TO a different person or group.
It would mean that the people speaking might not be the rebellious: they might actually be the obedient, because these verses happen during a portion of the chapter where he is trying to get the rebellious to see that there are people doing things in a different way than their own.
One point I'm making is that Isaiah 28 is not ONLY talking about rebellious people. (see verse 9 for example)
And the one supposition I hope you will consider is that perhaps it's not the rebellious who are speaking with stammering lips, but rather the obedient. And the rebellious happen to be the observers.
This would be supported by the Acts account(s).
In Acts, it wasn't the rebellious but rather the obedient who were speaking in tongues.
Also, in Acts 2 there is a clear declaration by Peter that "Hey guys, these guys aren't speaking this way because they're drunk(rebellious), they are speaking by (and exhibiting) the REST that was promised. And yet even when some see this miraculous thing occurring, and are told that THIS IS the rest/promise, they still rebel and kick against it.
Not only would this be consistent with the days and record of Acts, it has also been the case in current times.
= because people chose/choose to rebel against what God freely offers
= because God is faithful and told us in Isaiah that it would be this way
Love in Jesus,
Kelby