Rep. Thomas Massie of Kentucky on Friday announced the passing of his wife, Rhonda. 

"Yesterday my high school sweetheart, the love of my life for over 35 years, the loving mother of our 4 children, the smartest kindest woman I ever knew, my beautiful and wise queen forever, Rhonda went to Heaven," the Republican wrote on X. "Thank you for your prayers for our family in this difficult time."

Massie said just prior to Rhonda's death, "We spent last week touring Mt Rainier with our grandson."

"She was valedictorian at our high school where we went to the Prom together, accepted at MIT and Harvard, earned a Mechanical Engineering degree from MIT, and devoted her life to our family," he added, sharing images of the couple and their family.

Thomas Massie and wife Rhonda

Then House Speaker John Boehner, R-Ohio, left, conducts a ceremonial swearing-in ceremony with Rep.-elect Thomas Massie, R-Ky., as his wife Rhonda, looks on, in the Capitol in November 2012. (Tom Williams/CQ Roll Call/Getty Images)

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Rhonda Massie's cause of death was not immediately available.

Massie represents Kentucky's 4th Congressional District, which encompasses more than a dozen counties near the cities of Louisville and Lexington.

Rep. Thomas Massie

Rep. Thomas Massie, R-Ky., speaks during a House Rules Committee hearing to discuss a bill that would sanction the International Criminal Court on Capitol Hill on June 3 in Washington, DC.  (Andrew Harnik/Getty Images)

"I am deeply saddened by the passing of Rhonda Massie, the beloved wife of my friend and colleague, Thomas Massie," fellow Kentucky Rep. Andy Barr wrote on X. "Rhonda's warmth, kindness, and dedication to her family and community touched everyone who had the privilege of knowing her."

"My thoughts and prayers are with Rep. Thomas Massie and the entire Massie family following this terrible loss. Rhonda was an incredible woman," added Rep. Brett Guthrie.

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Rep. James Comer also said "Rhonda was a beautiful person both inside and out."