The 72-year-old actor was just 11 years old when his dad died in a car accident involving a drunk driver in 1964 and he admitted he was so "deeply moved" by Erika Kirk's address at the memorial service for her activist husband over the weekend, it has shifted his own feelings towards the tragedy.
Tim wrote on X: "When Erika Kirk spoke the words on the man who killed her husband: 'That man… that young man… I forgive him.' That moment deeply affected me.
"I have struggled for over 60 years to forgive the man who killed my Dad. I will say those words now as I type: 'I forgive the man who killed my father.'
"Peace be with you all."
The Home Improvement star previously reflected on how his father's death had sparked a "curious relationship with God" because he questioned if he had prayed harder or been with his father, if things could have been different.
He told 20/20's Elizabeth Vargas in 2011: "For years, I just did not like this idea of God, church. I was still a churchgoer, but constantly a cynic."
But his outlook eventually shifted.
He said: "Whoever built me, this is too much, too weird that it happened by accident. It didn't happen by accident."
Erika publicly forgave 22-year-old Tyler Robinson, the man who is accused of killing her husband at Utah Valley University during the first stop of his America Comeback Tour earlier in September, at the memorial service for the Turning Point USA founder on Sunday , in part because her 31-year-old spouse "wanted to save young men, just like the one who took his life."
She added: "Our Saviour said, 'Father, forgive them, for they not know what they do.' That man, that young man … I forgive him.
"I forgive him because it was what Christ did, and it's what Charlie would do."
Robinson is facing a number of charges over Charlie's killing, including aggravated murder, felony discharge of a firearm, obstruction of justice, witness tampering and violent offence in the presence of a child.
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