St Teresa, whose name was Teresa de Cepeda y Ahumada, was born in Avila, Spain, in 1515. In her autobiography she mentions some details of her childhood: she was born into a large family, her “father and mother, who were devout and feared God”, into a large family. She had three sisters and nine brothers.
While she was still a child and not yet nine years old she had the opportunity to read the lives of several Martyrs which inspired in her such a longing for martyrdom that she briefly ran away from home in order to die a Martyr’s death and to go to Heaven (cf. Vida,[Life], 1, 4); “I want to see God”, the little girl told her parents.
A few years later Teresa was to speak of her childhood reading and to state that she had discovered in it the way of truth which she sums up in two fundamental principles.
On the one hand was the fact that “all things of this world will pass away” while on the other God alone is “for ever, ever, ever”, a topic that recurs in her best known poem: “Let nothing disturb you, Let nothing frighten you, All things are passing away: God never changes. Patience obtains all things. Whoever has God lacks nothing; God alone suffices”. She was about 12 years old when her mother died and she implored the Virgin Most Holy to be her mother (cf. Vida, I, 7).
If in her adolescence the reading of profane books had led to the distractions of a worldly life, her experience as a pupil of the Augustinian nuns of Santa María de las Gracias de Avila and her reading of spiritual books, especially the classics of Franciscan spirituality, introduced her to recollection and prayer.
When she was 20 she entered the Carmelite Monastery of the Incarnation, also in Avila. In her religious life she took the name “Teresa of Jesus”. Three years later she fell seriously ill, so ill that she remained in a coma for four days, looking as if she were dead (cf. Vida, 5, 9).
In the fight against her own illnesses too the Saint saw the combat against weaknesses and the resistance to God’s call: “I wished to live”, she wrote, “but I saw clearly that I was not living, but rather wrestling with the shadow of death; there was no one to give me life, and I was not able to take it. He who could have given it to me had good reasons for not coming to my aid, seeing that he had brought me back to himself so many times, and I as often had left him” (Vida, 7, 8).
In 1543 she lost the closeness of her relatives; her father died and all her siblings, one after another, emigrated to America. In Lent 1554, when she was 39 years old, Teresa reached the climax of her struggle against her own weaknesses. The fortuitous discovery of the statue of “a Christ most grievously wounded”, left a deep mark on her life (cf. Vida, 9).