Here we are to take into consideration, in the first place, the fall and first sin of man, from which the depravity of human nature proceeds; and secondly, we are to consider the subject of sin in general, and especially original sin.

Of the fall and the first sin of man

In relation to this, we must enquire:
What was the sin of our first parents?
What were the causes of it?
What were the effects of it?
Why God permitted it?