"Hey Adam, even though you can't do anything about it, I command you to not eat from the Tree, even though I'm going to make you eat from the Tree anyway, and you can't do anything about it, and then I'll curse you and your descendents for it because it's all part of my plan, and make you suffer for something you had no power over".
Seems legit.
It is:
Romans 5:18-20 (Weymouths)
It follows then just as the result of a single transgression is a condemnation which to the whole race, so also is the result of a single degree of righteousness is a life giving acquittal which extends to the whole race. (19) for as thought the disobedience of one individual the mass of mankind were constituted as sinners, so also though the obedience of one, the mass of mankind will be constituted righteous. Now law was brought in later on so that the transgression might increase, but sin increased, grace is overflowed.
1 Corinthians 15:22-24
http://www.biblegateway.com/bg_versions/bgclick.php?what=2
http://www.biblegateway.com/bg_versions/bgclick.php?what=222For as in Adam all die, even so in Christ shall all be made alive.
23But every man in his own order: Christ the firstfruits; afterward they that are Christ's at his coming.