What are names for different approaches to unintentional sin?

Some (for example, Pat Donahue, the owner of bibledebates.info ) contend that unintentional sins separate a person from God just as much as deliberate sins will. By contrast, others (such as Bob Myhan and others Donahue debated) argue that an unintentional sin will only separate someone from God if the individual discovers it's sinful but does not repent. This distinction is important, so I would like to read more about the subject. What are the names of these two contrasting positions? The website calls Myhan's position "continual cleansing," but is this a precise term? Also, if other positions exist, what are their names?