Adam was not deceived - Eve was.
((1 Timothy 2:14))
so why did Adam - an unfallen, sinless man, undeceived, eat of the fruit of the tree of knowledge of good and evil?
not for lack of knowledge - God commanded him directly not to do this thing ((Genesis 2:17)).
not because of having sin nature, like all of us were born with - he was not fallen.
not because of being deceived, like all of us have been, and Eve also - he was not deceived.
why then?
Adam and Eve were created knowing God,and the tree of the knowledge of good and evil was put in the garden because God gave them a choice,for without that choice there is no true love.
God commanded them to not eat of that tree,and since Adam and Eve were created knowing God it would of never entered their mind to eat of that tree unless an outside source tempted them.
Since God gave them a choice,and it would of never entered their mind to eat of that tree unless an outside source tempted them,He allowed Satan to tempt Eve,which Satan said did God say you may not eat of every tree of the garden,which Eve plainly stated they could eat of every tree,but that one tree,and then Satan tempted her that she would not die,and that God knows if they ate of the tree they would be as gods,and could be more than their current position,which seems like he was saying God is holding them back from being all they can be by telling them to not eat of that tree,and it appealed to Eve's lust of the flesh,and she ate the fruit.
Then Eve was the outside source that tempted Adam by showing him that it was alright to eat of the fruit of that tree for she did not die,and Adam ate of the fruit of that tree.
Adam and Eve would of not eaten of that tree unless an outside source tempted them,which Satan tempted Eve,and Eve tempted Adam.
Eve was deceived,but Adam preferred to listen to his wife over God,and when she did not die then he thought it was alright to eat of that tree,and might of thought God lied to them concerning the tree,until their eyes were opened,and they knew they were naked,and were ashamed,and God confronted them,and then they knew they made a mistake,and their lives went downhill from there as far as their labor upon the earth.
Which we like to tell our children,and grandchildren of stories that occurred in our life for their entertainment,but I wonder if Adam and Eve kept that story to themselves concerning the tree,and said,let us not tell our offspring,and their offspring,about what we did in the garden for they might not look at us in the same light again,and might say,you idiots.