7:2-16 (Anatomy of Apology)

After Paul's 'letter of sorrow' the relationship between the Apostle and the Church in Corinth was in question. Paul was comforted by news (from Titus) that the Corinthians has expressed deep sorrow over the circumstances which prompted the letter (and excluded the promised visit). Now, Paul was assured that the letter had accomplished its purpose of prompting repentance. He then lists some of the character traits of a true repentance which had been demonstrated by the Corinthian Christians.

Earnestness
Eagerness to clear yourselves
Indignation
Alarm
Longing
Concern
Readiness to see justice done

This list is in contrast to half-hearted (or heartless) repentance which most often includes full or partial denial, casting of blame, excuses, etc. These traits show that the Corinthians were truly repentant and were, thus, now truly innocent (having been forgiven). They were now reconciled to Paul, but more importantly to God.