[xone]

In the first and second Adam, yes, but the Church Age was a mystery in all the Old Testament, and very little understood or revealed regarding the Holy Spirit.

My point was that the Spirit was not unknowable to the readers of Genesis.

[Cvengr]

Choice of words is delicate here.

I fully agree God the Holy Spirit acted throughout the Old Testament.

He didn’t indwell believers in the Old Testament, so there is a discernible difference in those ages.