Westminster Shorter Catechism #15

Question 15:

What was the sin whereby our first parents fell from the estate wherein they were created?

Answer:

The sin whereby our first parents fell from the estate wherein they were created, was their eating the forbidden fruit.

“When the woman saw that the fruit of the tree was good for food and pleasing to the eye, and also desirable for gaining wisdom, she took some and ate it. She also gave some to her husband, who was with her, and he ate it.” Genesis 3:6