Commentary on Genesis 9:2-4
By Frank and Mary Hoffman - 22 Feb 2010
This is all taking place during the fallen earth when God realized that people were still evil from their youth. See Genesis 8:21 and the two other commentaries on these verses in the Bible section of our web site.
You may also like to read Living in the Will Rather than the Concessions of God which is also in the Bible section of our web site.
The sexual aspect scenario of the forbidden fruit is a good one, but there is nothing in the Bible that proves this one way or the other. Another is that the forbidden fruit was flesh.
The whole thing boils down to the fact that God is trying to limit human depravity at the same time He is trying to bring them back into living in His perfect will.
We hope this helps.
In the Love of the Lord,
Frank and Mary