He’s right in that you cannot truly understand the NT without a good familiarity and understanding of the OT. And vice-versa.
You're absolutely correct.
The NT is on the OT concealed. The OT is in the NT revealed.
Yea, kind of like what does this mean?
“sky rolled back like a scroll”
The old testament uses this phrase or something very similar many times. And it pretty much means a strong government being replaced by a new power. The old one will no longer be read, or used, or have any influence. And a new one is now to be read and executed on.