Sure, the verses in Isaiah 9 showed you, but you hand waved them as out of context.
Let me ask you this. Is YHWH limited by His own Creation?
When all you have is the English translation you can easily take that verse and mis-interpret it any way you want to justify your belief.
The students of Jesus thought he would come back in their lifetime. He never did.
The same mistake was made with the followers of Rebbe Schneerson whom they thought he was Messiah and/or God and would come back. He hasn’t so far.