Heidelberg Catechism · Lord's Day 3
7. From where, then, does this depraved nature of man come?
Answer
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.
Scripture references
Genesis 3:1-24 · Romans 5:12 · Romans 5:18-19 · Psalm 51:5
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