3 Doors Down has canceled their latest tour after lead singer and drummer Brad Arnold, 46, revealed he has been diagnosed with Stage 4 cancer.

Arnold shared the heartbreaking news on Wednesday, May 7, through a post on social media.

”Hey everybody, it’s Brad from 3 Doors Down,” the “Kryptonite” singer said in an Instagram video. “I hope you’re having a great day today. I’ve got some not-so-good news for you today.”

“So I’d been sick a couple of weeks ago and then went to the hospital and got checked out and had actually got the diagnosis that I had clear cell renal carcinoma that had metastasized into my lung,” he explained. “And it’s Stage 4, and that’s not real good.”

Despite the shocking diagnosis, the singer expressed unwavering strength, saying he feels “no fear” and is “not scared” at all.

“But you know what?” Arnold said. “We serve a mighty God, and he can overcome anything. So I have no fear. I really, sincerely am not scared of it at all.”

“But it is gonna force us to cancel our tour this summer,” he announced. “And we’re sorry for that. And I’d love for you to lift me up in prayer every chance you get. And I think it is time for me to maybe go listen to ‘It’s Not My Time’ a little bit.”

Arnold was diagnosed with Stage 4 clear cell renal cell carcinoma—a type of kidney cancer—just a few weeks ago after falling ill and seeking hospital care, according to the New York Post. Doctors soon discovered the cancer had already spread to his lungs. As a result, 3 Doors Down was forced to cancel their upcoming tour, which was scheduled to begin on May 15 in Daytona Beach, Florida.

3 Doors Down is an American rock band formed in 1996 in Escatawpa, Mississippi. The group rose to fame with their 2000 debut single “Kryptonite,” which became a massive hit and helped launch their first album, The Better Life. Known for a mix of post-grunge and alternative rock, the band includes founding member and lead singer Brad Arnold. Over the years, they’ve released several successful albums, including Away from the Sun and Seventeen Days, earning multiple platinum certifications and producing hits like “Here Without You,” “When I’m Gone,” and “Let Me Go.” 3 Doors Down is also known for their strong support of U.S. military veterans and has toured extensively worldwide.