Amen and thanks for your interest. I believe you are right about Jesus speaking Aramaic mostly.
You are most certainly right about God knowing all.
We are reasonably sure that Jesus knew ancient Hebrew because of his knowledge of scripture. Of course, at that time, the Old Testament was the only "scripture". This is also the scripture that I was referring to.
Now we know that the name YHWH was written in scripture around 6,800 times and referred to God's name.
We know that it was spoken aloud. for example, Sarah, Leah, and many others.
These are in quotes, in the scripture. Thousands of times. Hard to deny.
So, it is ludicrous to claim that YHWH could not be pronounced.
Similarly, you would have to be a mental contortionist to think that God was hiding his name on purpose.
I would warn people against throwing out the old testament because it is the basis for the new testament.
It was Jesus' own resource.
I thank you again for your interest in the subject and please know that this is not a rebuttal to anything you have stated.
It's just what is on my mind at the moment and you are a good listener