Archie Williams, a contestant on “America’s Got Talent”, shared a powerful testimony during his last performance about the power of prayer.

Williams was arrested and incarcerated for 37 years for a crime that he didn’t commit. Despite a lack of evidence, he was found guilty of rape. He was sentenced to life in prison at only 22 years old. He served the majority of his time in Angola state penitentiary, one of the deadliest prisons in America.

Now at 59, he’s taking his life back.

“Freedom is of the mind, I went to prison but I never let my mind go to prison,” Williams told show host Terry Crews. “I couldn’t believe it was really happening. I knew I was innocent. I didn’t commit a crime. But being a poor black kid, I didn’t have the economic ability to fight the state of Louisiana.”

He said that behind bars, he relied on faith and music to keep him strong.

“When you’re faced with dark times, what I would do is I would pray and sing; this is how I got peace,” he said.

Williams was finally given a shot for justice after the Innocence Project took on his case and found DNA evidence to help exonerate him.