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.”