He was ordained a priest in the Archdiocese of Toulouse in 1991, at the age of 27, and spent five years as diocesan chaplain of the Eucharistic youth movement in the 1990s. Micas also served for three years as vocations officer for the archdiocese.
Micas joined the Society of Priests of Saint-Sulpice in 1999 and was a member of the National Council of Major Seminaries from 2011 to 2013. Since 2013, he has led the largest province of the priestly society founded in France.
The Catholic diocese of Tarbes-et-Lourdes dates back centuries before the appearance of the Blessed Virgin Mary in the city of Lourdes in 1858. The first record of a bishop of Tarbes dates back to 394 AD.
the Sanctuary of Our Lady of Lourdes has been known as a refuge for the sick for over a century. The shrine contains a spring through which miraculous healings have been documented.
There have been over 7,000 miraculous healings attributed to the intercession of Our Lady of Lourdes at the shrine since the apparition of the Virgin Mary Saint Bernadette Soubirous.
Of these, less than 100 have been recognized by Lourdes officials, while others have been documented by the bishops of local dioceses. An official miraculous cure must generally be a complete, spontaneous and immediate recovery from a documented medical condition.
The last official miracle attributed to the intercession of Our Lady of Lourdes was declared in 2018.
The Marian shrine recently faced financial difficulties after 95% of pilgrimages were canceled in 2020, resulting in the loss of millions of dollars used to maintain the shrine.
Pope Francis appointed Bishop Antoine Hérouard of Dijon as special pontifical delegate to oversee the pastoral care of pilgrims and other managements of the sanctuary of Our Lady of Lourdes in 2019.