After her death the fame of Mariam Thresia spread as she continued from heaven to succour the sick and the needy through miraculous favours.

In 1971 a historical commission collected the necessary evidence regarding her life, virtues and writings and presented it in 1983 before an eparchial (diocesan) tribunal, which also collected the depositions of fifteen of the surviving eye-witnesses. On 28 June 1999 the Congregation for the Causes of Saints promulgated a decree stating that the Servant of God Mariam Thresia had practised the Christian virtues heroically, and so she was entitled to be called Venerable. Of the numerous miraculous cures reported the following one was examined canonically in 1992.

Mathew D. Pellissery, was born in 1956 with congenital club feet and till he was fourteen he could only walk with great difficulty on the sides of his feet.

After 33 days of fasting and prayer invoking the help of Mother Mariam Thresia by the whole family, his right foot was straightened during night sleep on 21 August 1970. And similarly after 39 days of fasting and prayer his left foot was straightened overnight during sleep on 28 August 1971. Ever since then Mathew has been able to walk normally. This double healing was declared inexplicable in terms of medical science by as many as nine doctors in India and Italy and was declared a miracle obtained through the intercession of the Servant of God Mariam Thresia by the Congregation for the Causes of Saints on 27 January 2000. This miraculous cure thus met the last canonical requirement for her beatification scheduled for 9 April 2000.

Mathew Pellissery is grateful to be able to be present at this solemn celebration of beatification in Piazza San Pietro.