In about 860 B.C., the prophet Elijah (also known as Elias) arrived on this holy mountain to begin a life of contemplation and prayer. The First Book of Kings is filled with tales of wonders he performed and prophesies he gave. In his prophetic visions on Mount Carmel, Elijah became aware of the coming of the mother of the Messiah. He and his followers mystically dedicated themselves to her, setting an example as the first monks. The descendants of these ancient contemplatives were among the first to accept the teachigns of Christ and to be baptized by His apostles. Upon meeting Mary after Christ's Ascension, they were so overcome by her sanctity that they returned to the mountain to build a chapel in her honor. For the next thousand years, Mount Carmel continued to be a place where hermits devoted themselves to prayer. By the twelfth century, pilgrims from Europe who had followed teh Crusades to the Holy Land settled with the ascetics on Carmel and started a religious holy order known as the Brothers of the Blessed Virgin Mary of Mount Carmel. Their rule, which was given by in 1209 by the Patriarch of Jerusalem, says that all converges towards the contemplation of God. The Rule of Mysticism exhorts those who follow it to live a life of continual prayer, obedience to a superior, perpetual abstinence and fasting, manual work, and total silence.
Simon Stock, an English pilgrim, had joined the group on a visit to Jerusalem. At this time, Saracen invaders forced the monks out of their spiritual home on Mount Carmel. All those who would not leave were murdered. Simon Stock was instrumental in getting the order to move to Aylesford, England, where the Baron de Grey gave them a manor house. The Carmelite lifestyle of contemplation, poverty, and silent prayer was not easily accepted in Europe, particularly among the clergy who enjoyed almost the same status as royalty. Reading into the life of Mary, Simon Stock was inspired by her unquestioning acceptance of all that befell her; her virgin pregnancy, her raising and loving a child doomed to be executed; and her staying at the foot of the Cross while others ran away. It was through his insistence that the Carmelites evolved from a band of hermit ascetics who regretted the loss of their home on Mount Carmel into a traveling society of mendicant friars, opening schools and mission houes in the major capitals of Europe. Still it was difficult for many monks to accept the alteration of the rule fo the order to adapt to European conditions. Their presence was also shunned and not easily tolerated by other religious orders. The peopel thought the hermits strange and did not accept that they chose to live in such absolute poverty and isolation. In order to preserve what was left of their order, teh Carmelites invoked their patroness, the Virgin Mary, for help in establishing their new life.
The answer came in a vision to Saint Simon Stock on July 16, 1251, when he was alone in his cell. Mary appeared to him holding the scapular of his order. She told him, "Receive my beloved son, this habit of thy order; this shall be to thee and to all Carmelites a privilege, that whosoever dies clothed in this shall never suffer eternal fire. . . It shall be a sign of slavation, a protection in danger, and a pledge of peace."
The scapular, two pieces of brown wool joined at the shoulders and hanging down the back and breast, was not new to the Carmelite order. For hundreds of years before Saint Simon Stock's vision, monks in Europe had worn scapulars. But it is thought that the brown scapular that Mary delivered was referencing Elijah's camel-hair garment on Mount Carmel. Eventually, the brown scapular became reduced in size for laypeople to wear under their clothing. This is a special devotion to Mary worn as a sign to commemorate her faith in both God and humankind.
This gift from Mary helped the Carmelites explain the historical significance of their order to the laypeople; it served as a reminder that belief in Mary as the Mother of God extended back to the Old Testament with the prophet Elijah. After Pope John XXII (r.1313-1334) had a vision of Mary where she promised those wearing the brown scapular, "I, the Mother of Grace, shall descend on the Saturday after their death and whomsoever I find in Purgatory, I shall free, so that I may lead them to the holy mountain of everlasting life," the scapular became extremely popular among the common people By the end of the sixteenth centurey it had become smaller in size and very similar to the one that is worn today. Admiration for the Carmelite Order spread as their adherence to teh rules of solitude and prayer produced some of the greatest mystical saints in Catholicism, all of whom had visions of or openhearted communications with Mary. Among them are Saint Simon Stock, Saint Teresa, Saint John of the Cross, and Saint Therese of Lisieux.
Wearing the scapular is a form of prayer and is considered a visible sign of consecrating oneself to Mary and to accepting her maternal protection."
(Visions of Mary, pg 27-29).