Unde in presenti sermone de peccato mortali, quis est homicidium spirituale, duo declaremus (Dei gratia) salutis documenta, scilicet: 1) Primum peccati mortalis denominationem; 2) Secundum peccati ipsius mortalis perpetrationem.

Therefore, in this sermon about mortal sin, as spiritual homicide is, we can illustrate (with God's grace) two useful teachings: 1) The first, concerning the designation of mortal sin; 2) The second, concerning the perpetration of mortal sin itself.

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This sermon is part of a group (sermons 21-24, from Tuesday after Oculi to Friday after Oculi) developing the topic of the fifth commandment.