Crucifixtion of Saint Peter, Caravaggio, 1600-1601, Santa Maria del Popolo, Rome  | 
    At the end of his 
    pontificate Innocent III promulgated a decree at the Fourth Lateran Council 
    (1215) that laid down extensive rules about how and when an ecclesiastical 
    judge could prosecute criminals under his 
    jurisdiction. This conciliar 
    canon, Qualiter et quando 
    (c.8), established basic rules for ecclesiastical judges to investigate and 
    punish criminal clerics. Its provisions were based on a number of earlier 
    decretal letters that Innocent’s curia had sent in answer to questions that 
    judges had posed about the rules governing court procedure. In Qualiter 
    et quando two biblical passages justified Inquisitio:  Genesis 
    18:21 and Luke 16:2 Genesis 18:21 "Descendam et videbo utrum clamorem qui venit ad me, opere compleverint, an non est ita, ut sciam." Luke 16:2 "Et vocavit illum, et ait illi: quid hoc audio de te? redde rationem villicationis tuae."  |