| A | B |
| 51. Q. Is original sin the only kind of sin? | A. Original sin is not the only kind of sin; there is another kind of sin; which we commit ourselves; called actual sin. |
| 52. Q. What is actual sin? | A. Actual sin is any willful thought; word; deed or omission contrary to the law of God. |
| 53. Q. How many kinds of actual sin are there? | A. There are two kinds of actual sin-mortal and venial. |
| 54. Q. What is mortal sin? | A. Mortal sin is a grievous offense against the law of God. |
| 57. Q. What is venial sin? | A. Venial sin is a slight offense against the law of God in matters of less importance; or in matters of great importance it is an offence committed with out sufficient reflection or full consent of the will. |
| 59. Q. Which are the chief sources of sin? | A. The chief sources of sin are seven: Pride; Covetousness; Lust; Anger; Gluttony; Envy; and Sloth; and they are commonly called capital sins. |