why did saint juan diego become a saint?how?

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Saint Juan Diego, also known as San Juan Diego Cuauhtlatoatzin, is a revered figure in the Catholic Church. He is known for his role in the apparitions of the Virgin Mary, specifically Our Lady of Guadalupe, in Mexico in the 16th century.

Juan Diego was a native indigenous man and a convert to Christianity. According to tradition, on December 9, 1531, Juan Diego encountered the Virgin Mary on a hill called Tepeyac, near present-day Mexico City. She instructed him to go to the local bishop and request that a church be built on the site. Initially, the bishop was skeptical, so Juan Diego returned to the hill, and the Virgin Mary appeared to him again, giving him a sign to prove her presence—a series of roses that miraculously grew on the hill in December. When Juan Diego unfolded his cloak, called a tilma, before the bishop, the roses fell out, revealing an image of the Virgin Mary imprinted on the fabric.

The bishop was convinced of the authenticity of the apparitions, and a chapel was built on the site. Juan Diego lived the rest of his life as a humble servant of the Virgin Mary. He died on May 30, 1548, and his body was laid to rest in the chapel. Over the years, devotion to Juan Diego grew, and many considered him a holy figure.

The process of becoming a saint in the Catholic Church involves careful evaluation of an individual's life, virtues, and miracles attributed to their intercession. In the case of Juan Diego, the process of canonization began centuries after his death. The cause for his canonization was officially opened in 1987 by Pope John Paul II, and Juan Diego was declared "blessed" in 1990, which is the second-to-last step before being declared a saint.

To become a saint, evidence of miracles is usually required. In the case of Juan Diego, the first miracle recognized by the Catholic Church was the healing of Juan Diego Bernardino, a young boy who suffered from a life-threatening respiratory condition in 1990. The second miracle was the inexplicable cure of a woman named Juan Jose Barragan, who suffered from a genetic disorder that caused degeneration of the optic nerves. These miracles were investigated and approved by the Vatican, eventually leading to Juan Diego's canonization.

On July 31, 2002, Pope John Paul II traveled to Mexico and announced the canonization of Juan Diego. He was officially declared a saint on July 31, 2002, during a special Mass in Mexico City. Juan Diego became the first indigenous American saint and is revered for his devotion to the Virgin Mary and his role in spreading the Catholic faith in Mexico.