Tancred, De criminibus et qualiter agitur contra Criminosos (ca. 1216)

Incipit:  Quoniam rei publice interest ut crimina non remaneant impunita .  .  . nota quod quattuor modis agitur de crimine .  .  . in modum denunciationis, inquisitionis, exceptionis, et accusationis (It is in the public interest that crimes do not remain unpunished  ... Note that there are four ways of bringing a crime to justice:  denunciation, inquisition, exception, and accusation).

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."

 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