Insightful post,There has gotta be a 100 million folks on this earth,who really belief that Jesus actually spoke that archaic old english.
The King James version of 1611 say's "Authorized" on the cover.[ Authorized by his benevolent majesty King James of England NOT God Almighty.]
One thing is for sure Jesus mother Mary did NOT call him Jesus.
We don't even know for sure what Jesus native tongue was.
The " J " in Jesus comes from the " J " in Jehovah.I believe the " Y " got Latinized in the 5th century and morphed to " J "
That is one of several reasons that Jehovah is not the correct pronunciation of God's name.