We must now consider the sin of blasphemy, which is opposed to the confession of faith; and (1) blasphemy in general, (2) that blasphemy which is called the sin against the Holy Ghost.

Under the first head there are four points of inquiry:

A1 Whether blasphemy is opposed to the confession of faith?

A2 Whether blasphemy is always a mortal sin?

A3 Whether blasphemy is the most grievous sin?

A4 Whether blasphemy is in the damned?