Queen Elizabeth was reportedly moved to tears while reading her extraordinary speech during her 21st birthday.

On Feb. 1, 1947, Her Majesty, Princess Margaret, King George VI, and Queen Mother went on a tour of South Africa. While there, the Queen celebrated her 21st birthday with a heartwarming speech that was broadcasted live from Cape Town.

The monarch touched the hearts of people after she declared her devotion to fulfilling her role as the Head of the Commonwealth. In her speech, the Queen vowed to dedicate her entire life to the service of the people and the great imperial family.

In the 2014 documentary “The Majestic Life of Queen Elizabeth II,” royal biographer Hugo Vickers said that Her Majesty’s speech described how she felt and even moved her to tears.

“Princess Elizabeth became 21 when she was in South Africa and made this extraordinary speech dedicating her life to the services of the Commonwealth and the Empire, I think she said in those days. It’s very, very harvest, it fits right in with this wish to serve first and I think that’s what she always wanted to do,” he said.

Robert Lacey, a royal biographer, seconded Vickers statement. He said that Her Majesty wasn’t the one that wrote the speech, and it was only given to her for approval.

“Apparently, the first time she read it she cried. She said this is exactly how I feel, this is exactly what I want to say,” she said.

The speech also showed that King George VI’s faith in the Queen was justified. He was right to think that his eldest daughter had this overwhelming sense of duty not just to Britain but to the Commonwealth as a whole.

Her Majesty remains to be the monarch at the age of 92. She may have shown some signs of slowing down by giving away some of her royal duties and patronages to the younger members of the royal family. However, it is evident that she will never retire from her role as long as she’s healthy and alive.

Queen Elizabeth II
Queen Elizabeth II was moved to tears while reading her 21st birthday speech. Pictured: The Queen arrives for the state banquet in her honour at Schloss Bellevue palace on the second of the royal couple's four-day visit to Germany on June 24, 2015 in Berlin, Germany. Getty Images/Sean Gallup