Mike Rinder — a prominent former high-ranking official within the Church of Scientology who later became a vocal critic of the organization — has passed away, as confirmed by a heartfelt post on Instagram from his wife. His legacy as a whistleblower on the practices of Scientology is significant, and his life’s journey has sparked conversations about the organization’s controversial methods.

Christie King Collbran shared the heartbreaking news in an emotional Instagram post on Sunday. In her tribute, she expressed profound sorrow and pain over his passing, stating that despite the tragedy, his remarkable courage and unwavering integrity will continue to inspire many for years to come. Her words reflect the deep impact Rinder had on those who knew him, emphasizing the strength of his character.

In her emotional message, Collbran described Rinder as a steadfast and unwavering presence in the lives of all who knew him, someone who offered support and strength. She poignantly added, “the world will remember you,” highlighting the profound impact he made on many people’s lives and underscoring his role as a beacon of hope for those seeking truth and justice.

While Christie did not elaborate on the cause of death, it is known that last year Rinder publicly disclosed his battle with esophageal cancer. This revelation brought attention to his struggles and the challenges he faced, showcasing his bravery in the face of adversity. His willingness to share his health journey has resonated with many, offering insight into the realities of dealing with such a serious illness.

Included within the heartfelt post is a poignant message from Mike, which he imparted to Christie before his passing. In part, it reads, “I’ve been fortunate — living two lives in one lifetime. The second being the most wonderful years anyone could wish for with all of you and my new family!” This statement reflects his gratitude for the love and experiences he cherished throughout his life.

He further expressed, “My only real regret is not having accomplished what I said I wanted to — ending the abuses of Scientology, particularly the practice of disconnection, and seeing [my son] Jack into adulthood. If you are in any way fighting to end these abuses, please keep the flag flying — never surrender.” His words serve as a rallying cry for those who continue to stand against injustice and advocate for change.

For those unfamiliar, Rinder was raised within the confines of Scientology in Australia. After completing high school, he made a significant commitment by signing a “billion-year” contract with the organization, indicating his dedication to its inner circle and its controversial practices. His early life in Scientology shaped much of his later views and actions.

Throughout his career, Rinder served as the international spokesperson and headed the Office of Special Affairs for Scientology. However, in 2007, he began to expose the organization’s alleged abuses, risking his safety and standing in the community. His courageous decision to speak out has sparked significant debate and scrutiny regarding the practices within Scientology.

He documented his experiences in the book “A Billion Years: My Escape From a Life in the Highest Ranks of Scientology.” In this compelling memoir, he revealed that the church grew increasingly concerned about Tom Cruise‘s loyalty during his marriage to Nicole Kidman. This insight sheds light on the inner workings of the organization and its influence over high-profile members.

In addition to his writing, Rinder cohosted “Scientology and the Aftermath,” an Emmy-winning docuseries that delved into the controversial practices and experiences of those involved in Scientology. The show aired its first season in 2016 and contributed to a broader understanding of the church’s impact on individuals and families.

On their official website, the Church of Scientology has publicly stated, “Mike Rinder is not a reputable source regarding Scientology. He has not stepped inside a Church in almost a decade. The Church expelled him for malfeasance and has had nothing to do with him since.” This statement reflects the organization’s ongoing efforts to discredit former members who speak out against its practices.