A84: Every sin deserveth God’s wrath and curse, both in this life, and that which is to come.

For further study see:

1. WSC 14:  What is sin?
2. WSC 15: What was the sin whereby our first parents fell from the estate wherein they were created?
3. WSC 18: Wherein consists the sinfulness of that estate whereinto man fell?
4. WSC 20: Did God leave all mankind to perish in the estate of sin and misery?
5. WSC 85: What doth God require of us, that we may escape his wrath and curse due to us for sin?
6. WLC 24: What is sin?
7. WLC 25: Wherein consists the sinfulness of that estate whereinto man fell?
8. WLC 26: How is original sin conveyed from our first parents unto their posterity?
9. WCF CHAPTER 6: Of the Fall of Man, of Sin, and of the Punishment Thereof