In 1968, when he was 11 years old, Michael Mack was molested by his parish priest in North Carolina. It changed him in ways that took years to reveal themselves. In January, Mack began performing “Conversations with My Molester: A Journey of Faith,’’ a lyric spoken-word piece about the abuse, his struggles, and what happened after that Google search. On Thursday, in what seems another almost providential turn of events, he will perform “Conversations’’ at his current parish, St. Paul Catholic Church, near Harvard Square. He says the performance is an act of reconciliation that’s appropriate at Lent.