Demond Wilson, the beloved actor who rose to fame in the 1970s as Lamont in the groundbreaking sitcom “Sanford and Son,” and who later devoted his life to ministry, has passed away at the age of 79.

His publicist, Mark Goldman, confirmed to The Associated Press that Wilson succumbed to complications from cancer on Friday. In a heartfelt statement, Goldman praised Wilson’s life as one of deep faith and service, noting his dedication as a father, actor, author, and minister. “Demond lived a life rooted in faith, service, and compassion. Through his work on screen, his writing, and his ministry, he sought to uplift others and leave a meaningful impact on the communities he served,” Goldman expressed in an email.

Best remembered for his role as Lamont Sanford, Wilson played the patient son to Redd Foxx’s hilariously irritable Fred Sanford. The show, which was a trailblazer for featuring a predominantly Black cast, debuted in 1972 and quickly became a hit. Lamont’s character often found himself at the receiving end of his father’s antics, including the iconic catchphrase, “You big dummy!”

“Sanford and Son” enjoyed a successful run on NBC for six seasons, captivating audiences with its humor and heart before concluding when ABC presented Foxx with an opportunity for a variety show. Wilson’s portrayal of Lamont left an indelible mark on television history and endeared him to fans across generations.

The thoughtful Lamont had to put up with his junkyard owner father’s schemes, bigotry and insults — most famously, and repeatedly, “You big dummy!”

The show was a hit for its six seasons on NBC but ended when ABC offered Foxx a variety show.

Wilson was born in Valdosta, Georgia, and grew up in the Harlem section of Manhattan, according to the biography on his website.

He served in the U.S. Army in Vietnam and was wounded there, and he returned to New York and acted on stage before heading to Hollywood.

A guest appearance on “All in the Family” in 1971 led to his best-known role. Norman Lear produced both shows.

Wilson told AP in 2022 that he got the role over comedian Richard Pryor.

“I said, ‘C’mon, you can’t put a comedian with a comedian. You’ve got to have a straight man,’” he said he told the producers.

After “Sanford and Son” ended, Wilson starred in the shorter-lived comedies “Baby I’m Back” and “The New Odd Couple.” He later appeared in four episodes of the show “Girlfriends” in the 2000s, along with a handful of movie roles.

Though he returned to the screen at times, he told the Los Angeles Times in 1986 that the acting life was not for him: “It wasn’t challenging. And it was emotionally exhausting because I had to make it appear that I was excited about what I was doing.”

Wilson became a minister in the 1980s.

He is survived by his wife, Cicely Wilson, and their six children.