From where, then, did man’s depraved nature come?

From the fall and disobedience of our first parents, Adam and Eve, in Paradise, for there our nature became so corrupt that we are all conceived and born in sin.

Proofs

• From the fall and disobedience of our first parents, Adam and Eve, in Paradise, (Genesis 3)
• for there our nature became so corrupt (Romans 5:12; Romans 5:18–19)
• that we are all conceived and born in sin. (Psalm 51:5)