Answer to a Post of the Inquisition on readmeinc.blogspot.com

The Inquisition was a practice in TORTURE and KILLING of INNOCENTs. 

I would like to discuss and answer the comment posted in readmeinc blog. This is the link and the


http://readmeinc.blogspot.com/2009/10/inqusition-with-true-church.html


by Forest King : "Plaridel, just as there is a need for a court to try crimes against the laws of the state, there is a need for a court to try crimes against the laws of the church. You cannot just judge anyone without due process of Law- this was what the inquisition for." 

Then what scriptural authority did the Catholics base in the creation of a court to try the crimes against the laws of the Church?