Joey Feek, of the country-bluegrass duo Joey + Rory, was recently admitted into hospice care in Indiana after ending treatment for colorectal cancer in late October.

ET caught up with Blake Shelton ahead of Tuesday night's live episode of The Voice, where the 39-year-old country singer opened up about the Feeks' story. Rory wrote Shelton's 2004 hit song "Some Beach."

"The courage that they as a family have displayed -- it's inspirational," Shelton told ET. "It's sad, but it's special at the same time."

WATCH: Joey Feek Enters Hospice Care After Rory Shares Heartbreaking Photo With Their Daughter

Joey, 40, was diagnosed with cervical cancer in 2014, just months after giving birth to the couple's daughter Indiana, who was born with Down syndrome. Earlier this year, the bluegrass artist revealed that the cancer had spread to her colon.

In October, Joey shared the news that her cancer was terminal, and that she had decided to stop treatment. Rory has been providing updates on her health and condition on the couple's blog during her battle with her illness.

"I never really got to knew [Rory] that well," Shelton admitted. "He was always just someone I kinda knew. But to see what they're going through as a family and what's happening with Joey, what can you say?"

PHOTOS: Celebrities Stand Up to Cancer

On Monday, Rory wrote in a blog post that he and Indiana are spending time with Joey while she is in hospice care. "Joey is at peace with where she is and where she’s going. So am I," he wrote.

Check out the video below to see more about Joey's battle with cancer and how her family is dealing with the developments.