Gen 3:6 So when the woman saw that the tree was good for food, and that it was a delight to the eyes, and that the tree was to be desired to make one wise, she took of its fruit and ate, and she also gave some to her husband who was with her, and he ate.
1Jn 2:15 Do not love the world nor the things in the world. If anyone loves the world, the love of the Father is not in him.
1Jn 2:16 For all that is in the world, the lust of the flesh and the lust of the eyes and the boastful pride of life, is not from the Father, but is from the world.
1Jn 3:4 Everyone who practices sin also practices lawlessness; and sin is lawlessness.
Genesis 3:6 tells us precisely why first Eve and then Adam disobeyed God. I John 2:15-16 establishes the reasons for nearly all the sins of mankind, (1) the lust of the flesh, (2) the lust of the eyes, and (2) the pride of life. 1 John 3:4 defines sin in the simplest terms. All are deliberate choices.