Saint Teresa of Jesus (1515–1582), born Teresa Sánchez de Cepeda y Ahumada, was a Spanish Carmelite nun, mystic, writer, and reformer who left a lasting mark on religious life in sixteenth-century Spain. Born in Ávila into a large and devout family, she entered the Carmelite Monastery of the Incarnation at the age of twenty. After years of illness, prayer, and interior struggle, she underwent a profound conversion that would set her on a path toward a more authentic and radical living of the Gospel. In 1562, Teresa founded the Monastery of Saint Joseph in Ávila, marking the beginning of her reform of the Carmelite Order. The communities she established were centred on poverty, fraternity, silence, and deep contemplative prayer. Despite facing opposition, public criticism, and even investigations by the Inquisition, she pressed forward with remarkable courage and unwavering faith. Together with Saint John of the Cross, she went on to found seventeen monasteries throughout Spain and extended the reform to the Carmelite friars as well.

 

Teresa was also a gifted and prolific spiritual writer. Her works above all, The Book of Her Life, The Way of Perfection and The Interior Castle, remain enduring classics of Christian spirituality and contemplative prayer, treasured by readers across the centuries.

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Her final illness came upon her while she was travelling from Burgos to Alba de Tormes. She died in 1582, during the historic transition from the Julian to the Gregorian calendar, when the dates of 5 to 14 October were omitted. Her last words were: “My Lord, it is time to move on. Well then, may your will be done. O my Lord and my Spouse, the hour that I have longed for has come. It is time to meet one another.”

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She was canonised in 1622 by Pope Gregory XV. On 27 September 1970, Pope Paul VI proclaimed her the first woman Doctor of the Church, honouring her with the title “Doctor of Prayer.”