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?