We must now consider the debt of punishment. We shall consider (1) the debt itself; (2) mortal and venial sin, which differ in respect of the punishment due to them.

Under the first head there are eight points of inquiry:

(1) Whether the debt of punishment is an effect of sin?

(2) Whether one sin can be the punishment of another?

(3) Whether any sin incurs a debt of eternal punishment?

(4) Whether sin incurs a debt of punishment that is infinite in quantity?

(5) Whether every sin incurs a debt of eternal and infinite punishment?

(6) Whether the debt of punishment can remain after sin?

(7) Whether every punishment is inflicted for a sin?

(8) Whether one person can incur punishment for another's sin?